Is there a future in SQL?

Is there a future in SQL?

The future of SQL is really bright and most of the successful SQL professionals ensure that they know each and everything about current trends of the database and stay updated about the technical market.08-Apr-2022

Which database should I learn in 2020?

MySQL and PostgreSQL are the leaders from the open-source and free database. If we talk about commercial databases Oracle is gaining popularity. In NoSQL databases, MongoDB, Redis, and Cassandra are the leaders.

Which is better SQL or MySQL?

In terms of data security, the SQL server is much more secure than the MySQL server. In SQL, external processes (like third-party apps) cannot access or manipulate the data directly. While in MySQL, one can easily manipulate or modify the database files during run time using binaries.

What database should I learn in 2021?

MySQL and PostgreSQL are the leaders from the open-source and free database. If we talk about commercial databases Oracle is gaining popularity. In NoSQL databases, MongoDB, Redis, and Cassandra are the leaders. Depending on the project requirements industries are using it.

Which SQL should I learn first?

Different SQL dialects Popular dialects include MySQL, SQLite, and SQL Server, but we recommend starting with PostgreSQL—it’s the closest to standard SQL syntax so it’s easily adapted to other dialects. Of course, if your company already has a database, you should learn the compatible dialect.Sept 7, 2020

Is SQL worth learning in 2021?

Developing strong SQL skills will allow you to take your analyses, visualizations, and modeling to the next level because you will be able to extract and manipulate the data in advanced ways. Also, writing efficient and scalable queries is becoming more and more important for companies that work with petabytes of data.01-Jan-2021

Which database should I learn as a beginner?

SQLite is the easiest database for beginners to learn. It is a powerful relational database management system (RDBMS) with a light and easy design. It is also the simplest database, that is perfect for practicing joins and simple queries.

Should I learn SQL before learning?

If you’re pursuing a career that even tangentially relates to data manipulation or analysis (e.g., back end programming, data science, cybersecurity, etc.,) you need to learn SQL. As mentioned earlier, SQL is the standard query language used to interact with relational databases.

Is it worth learning SQL in 2021?

5 Reasons SQL Is Worth Learning. SQL ranked fourth as a popular programming language on Stack Overflow’s Developer survey in 2021, proving that it’s a fundamental skill in the tech development process. You can join a group of software engineers or developers and be the database expert.07-Feb-2022

Is SQL is good for career?

If you’re looking for your first job in data, it turns out knowing SQL is even more critical. For data analyst roles, SQL is again the most in-demand skill, listed in 57.4% of all data analyst jobs. SQL appears in 1.5 times as many “data analyst” job postings as Python, and nearly 2.5 times as many job postings as R.

Is learning SQL enough to get a job?

Knowledge of SQL is not enough to secure most DBA jobs. Established companies prefer to hire someone with a degree in a computer science field, experience and knowledge of their industry, and appropriate certifications. Companies prefer to hire those who have experience in the version of SQL used in the industry.

Is learning SQL worth it in 2021?

Yes, SQL is worth learning because it’s not only simple to learn, but it also continues to be a highly in-demand skill.Feb 7, 2022

Should I learn SQL first or Python?

The chart below shows that being able to program in Python or R becomes more important as job seniority increases. Yet, being able to program in SQL, becomes less important. This suggests that, in the long run, you are much better off learning R or Python than SQL.

Is MySQL same as SQL?

SQL is a query programming language that manages RDBMS. MySQL is a relational database management system that uses SQL. SQL is primarily used to query and operate database systems. MySQL allows you to handle, store, modify and delete data and store data in an organized way.28-Oct-2021

What should I learn first SQL or MySQL?

Should I learn SQL or MySQL? To work on any database management system you are required to learn the standard query language or SQL. Therefore, it is better to first learn the language and then understand the fundamentals of the RDBMS.

What should I learn before SQL?

While there are many programming languages that developers can learn, SQL doesn’t require prior programming skills. However, SQL developers can benefit from having experience with JavaScript, PHP and C#.23-Sept-2019

Which SQL language is best to learn?

With so many SQL dialects, it can be hard to know where to start. Popular dialects include MySQL, SQLite, and SQL Server, but we recommend starting with PostgreSQL—it’s the closest to standard SQL syntax so it’s easily adapted to other dialects.Sep 7, 2020

What should I learn next to SQL?

Learning Python Python is one of the world’s most popular programming languages and for good reason. It’s a powerful language with clear, simple syntax. It’s written very much like everyday English, even more so than SQL.Jun 3, 2020

6 Best Databases To Use In 2022 – Learn | Hevo

SQL Databases are perfectly suited to store and process structured datasets, whereas NoSQL Databases are best suited for semi-structured and unstructured data types. You’re already familiar with different types of Databases. Model your data to determine which type of Database (Relational, Columnar, Graph, etc) is relevant for your use case.

Top 7 Databases to Learn in 2021 – GeeksforGeeks

We have shown 7 databases to use in 2021. Apart from these 7 databases other databases that are going to be used a lot in industries are Elasticsearch, Cassandra, MariaDB, and Firebase. MySQL and PostgreSQL are the leaders from the open-source and free database. If we talk about commercial databases Oracle is gaining popularity.

Learn Databases: Best Courses, Certifications, and

If you plan on working with NoSQL databases, such as MongoDB, you will need to learn a different set of skills. Enroll in courses. Enroll in database courses. You can take courses on things like network databases and application programming. Choose the courses that best suit your interests. Practice.

7 Best Database Courses & Certification [2022 APRIL] [UPDATED]

7 Best Database Courses & Certification [2022 MARCH] [UPDATED] 1. Databases Courses (Udemy) 2. Database Degrees and Certificates (Coursera) 3. MicroBachelors Program in Introduction to Databases by New York University (edX) 4. Database Programs and Certifications (edX) 5. Free Databases Training (LinkedIn Learning) 6.

2021's Most Popular Databases | lets you learn SQL by writing SQL code on your own. You build your SQL skills gradually. Each new concept is reinforced by an interactive exercise. By actually writing SQL code, you build your confidence. 3. SQLite Look who’s moving up in the world: SQLite. It’s open-source, free to use, and the choice of many mobile app developers.

The 7 Best Database Management Courses and Online Training

Learning Relational Databases. Platform: LinkedIn Learning Description: Adam Wilbert covers the basics of relational database design, regardless of whether you use Access, FileMaker, Open Office, or SQL Server. Learn how to prevent data anomalies, gather requirements to plan your design, and develop a conceptual data model—translating your ideas into components like tables, relationships

The Most Popular Databases in 2020 |

In 2018, only 19.7 percent of professional developers indicated they used this database; this year, it’s more than 30 percent. And that’s not by accident. This is a great solution for specific applications. 5. MongoDB MongoDB is the only solution in the top five that is not based on a relational database.

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5 Best Books to learn SQL and Database design in 2022 | by

The e xercises will push you to think through scenarios, which eventually help you to get better at designing a database. 3. Six-Step Relational Database Design This is another excellent book to

5 Best Database Design Courses [2022 APRIL][UPDATED]

5 Best Database Design Courses [2022 APRIL] [UPDATED] 1. Best Database Design Courses (Udemy) 2. FREE Course – Database Systems Concepts & Design (Udacity) 3. Database Design for Everyone (Udemy) 4. Database Design in SQL (Datacamp) 5. Database Design Courses (Coursera)

6 Easiest Database Programs to Learn – Insider Monkey

Since database programs are usually based on coding languages, most commonly SQL for example, you might first take a look at the Easiest Coding Languages to Learn for First-Time Learners, before

13 Best Database Software and Systems of 2022 (Ultimate Guide)

Here are my picks for the best database software to use this year: 1. Knack. Knack was founded in 2010 and is the easiest online database tool I’ve come across. They’re a SaaS-based online tool that allows their users to easily structure, connect, and extend data with no coding required.

Best database software in 2022 | TechRadar

Better still, Oracle provide an “always free” tier with their cloud services, which includes the use of two Oracle Autonomous Databases, as well as access to tools such as Oracle Application

15 Best Database Design Courses & Certifications Online

Let’s get started. Courses 1. SQL for Beginners: Learn SQL using MySQL and Database Design [Udemy] 2. Database Design and Basic SQL in PostgreSQL [Coursera] 3. Designing Highly Scalable and Highly Available SQL Databases [LinkedIn Learning] 4. Relational Database Design [Udemy] 5. Database Design and Operational Business Intelligence [Coursera] 6.

18+ Best Online Resources for Learning SQL and Database

Essential SQL, authored by Kris Wenzel ( @sqlkris ), is a great place to learn the fundamentals of SQL and database concepts. The course is based on Microsoft SQL Server, which is why the author provides newbie users with a guide on how to get started using this database engine.

19 Best Database Books – Database Star

A great way of learning about databases, and programming in general, is through books. While video learning is convenient and useful, books still have their place when learning. There are a lot of books on databases, but I’ve scoured the Internet and created a list of what I think are the best database books that you should read.

Top 9 Database Programming Languages you should learn in 2020

PHP is consider faster, lightweight, and one of the top database programming languages. It is designed to operate on the web. 5. Java-: Java is one of the most popular and oldest programming languages used for enterprise developments. There are many most popular big data tools/frameworks run in JAVA.

13 BEST Free Database Software (SQL Databases List) in 2022

This comparison database name list contains open-source tools that may have freemium features of the Top Free database. List of the Best SQL Database Software: #1) InterBase #2) Microsoft SQL #3) Database Performance Analyzer #4) MySQL #5) PostgreSQL #6) MongoDB #7) OrientDB #8) MariaDB #9) SQLite #10) Cassandra #1) InterBase

Top 9 SQL and Database Courses to Learn Online | HackerNoon

Overall, it is a good SQL course if you want to learn with Oracle database. 5. 200+ SQL Interview Questions This is an excellent course to learn SQL from an interview point of view. If you are preparing for your first job interview or next job, you can expect a lot of SQL questions on the interview.

10 Best Courses to learn SQL in 2022 [UPDATED] | by

Complete SQL + Databases Bootcamp: Zero to Mastery [2022] SQL and knowing how to work with data is a valuable skill for almost any role and getting more valuable by the day, and this is one of the

Top Database Courses – Learn Database Online | Coursera

Having skills and experience in SQL is important before starting to learn database because, even though the language has been around since 1997, SQL is still among the most popular languages in database work, many companies use it including big names like Google and Amazon, and a majority of job positions in database require SQL.Learning other languages is also helpful, including Python, C

Computer Programming Blog for Programmers – I'm a

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60 Best Resources for Learning SQL – Database Star

So, learning one vendor’s SQL makes it pretty easy to learn another vendor’s SQL. Oracle: database is targeted towards large organisations, but they also offer a small, free version called Oracle Express. SQL Server: a Microsoft database, also targeted towards large organisations. Good integration with other Microsoft technologies.

Learn Databases with Online Courses, Classes, & Lessons | edX

Online Courses in Database Development. The fields of Data Science, Analytics, Java, Oracle Databases,Web Application Development, Software Development, Big Data and more all depend on databases for the management of information. It is essential to learn how to create a database and to understand how they work.

Best Way To Learn SQL: Ultimate Guide On How To Learn SQL

So, What is The Best Way to Learn SQL? 5.1. 1. Practice Is The Key To Success 5.2. 2. Choose Courses Carefully 5.3. 3. Don’t Be Scared To Ask For Help 6. Start now and stack your experience What’s The Best Way To Learn SQL? The best way to learn SQL is through practice.

Database Tutorial – Quackit

Learn about database management systems, database programming, administration and more. This database tutorial explains what a database is, how to create one, database design, creating tables, and more.

Best way of learning is Sharing.: Choose your SQL Database

Best way of learning is Sharing. Microsoft Azure provides various option for SQL Database on Azure platform and it is often confusing what to choose when. Here I’ll be trying to answer the questions and help you to choose the right SQL database on Azure. Microsoft provide below options for SQL Database options on Azure Platform: SQL Server on

18 Best Open-Source and Free Database Software – Learn Hub

Visit our database software management categories to find more open-source and proprietary options for the best database tool to fit your company’s needs or learn more about the differences between data warehouses vs. databases.

5 Best Database Tips for Beginners – Lifewire

The Structured Query Language (SQL) forms the core of all relational databases. It provides a uniform interface to Oracle, SQL Server, Microsoft Access, and other relational databases and is a “must learn” for all aspiring database users. Take an introductory SQL course before you attempt to learn any specific database software.

The Best SQL Database Tutorials – Learn to Code

The Best SQL Database Tutorials SQL stands for Structured Query Language. It is the most common tool used to manipulate and manage data in a relational database (often referred to as a “SQL database”).

An Introduction to Databases for Beginners

Server databases like MySQL, Microsoft SQL Server, and Oracle are enormously powerful—but also expensive and can come with a steep learning curve. Essential Skills All but the simplest databases rely on Structured Query Language to develop new database assets (like tables and columns) or to extract information through queries.

Best Database Certifications for 2020 –

2. Microsoft SQL Server database certifications SQL Server offers a broad range of tools and add-ons for business intelligence, data warehousing and data-driven applications of all kinds.

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Learn the structure of an Access database

Now that you know about the basic structure of Access databases, read on to learn how to use the built-in tools to explore a particular Access database. See details about the objects in a database. One of the best ways to learn about a particular database is by using the Database Documenter.

25 Best SQL Tools | Database Software & IDE (2022 Update)

26) Sequel Pro: Sequel Pro is a fast, easy-to-use database management tool for working with MySQL. This SQL management tool helpful for interacting with your database. It is one of the best SQL database tools that allows easy to add new databases, add new tables, add new rows, and any other type of databases using this software.

best database book for developers – Stack Overflow

For database concepts Fundamentals of Database Systems. Good Books for SQL Looking for a good book to learn SQL. For SQl Server How to Learn MS SQL Server 2005? Beginning SQL Server 2005 Administration. FOr MySql What are the best books for MySQL? Book recommendation for advanced SQL design, scripting and optimiziation.

What's the best way for me to learn SQL and databases

learning databases which is the much larger topic. I would suggest that you start by learning some database theory (which, unfortunately is a topic dry as the Sahara desert). It is essential to learn and understand the theory of databases in order to produce working, usable databases.

Top 90 Database Blogs and Websites To Follow in 2022

19. Vertica | Vertica Blog. Cambridge, Massachusetts, US. Vertica is the unified analytics data warehouse, based on a massively scalable architecture with the broadest set of analytical functions spanning event and time series, pattern matching, geospatial and end-to-end in-database machine learning.

5 Best SQL Courses for Beginners to Learn Online in 2022

5 Best SQL Online Courses for Beginners to Learn in 2022. Here is a list of the best Udemy courses to learn SQL and Database in 2022. These SQL online courses are suitable for beginners as well as intermediate developers who have used SQL but don’t know SQL in depth and want to level up their SQL skills. 1.

Best Database Management Courses Online | Beginner

Learn the best database management strategies and techniques from top-rated Udemy instructors. Whether you’re interested in learning new types of database management methods, or specific tools like MySQL, MongoDB, or Oracle Database, Udemy has a course for you.

Top 5 Best Databases – The Geek Stuff

Oracle best for mission-critical apps?! Another fine example of how consensus should not be taken for reality. You’d be surprised, I’m sure, to learn just how much of the world actually runs on one of the many flavours of Pick/Multi-value, and that because they have learned the hard way, rather than by the consensus of observers and mono-theists, what actually works best.

The Ultimate Guide on how to Become a Database

Nevertheless, most senior database managers begin their careers as techie DBAs, tinkering with and learning the various aspects of databases and database management. Another remuneration tracker website, ITcareerfinder, In fact, the magazine US News ranked database administrator sixth in its top 10 list of Best Technology Jobs.

20 Best SQL Certification Courses & Training Online 2022

The course emphasises on practical learning. It includes a series of hands-on labs that enable learners to practice building and running SQL queries on a live database. Students also learn how to access databases from Jupyter notebooks using SQL and Python. Key Highlights. Get started with performing SQL access in a data science environment

10 Best MS Access Training, Courses & Classes Online 2022

Learn how to design the best queries for your database; Understand how to present dynamic reports using Access; Learn to build automation in Access, leading to savings in time and money; Duration : 13 hours on-demand video Rating : 4.7 Sign up here. 4. Microsoft Access 2019 Essential Training (LinkedIn Learning)

Database Programming: Courses, Training, and Other

Database programming involves designing and maintaining a database for an application. Best practices include establishing relationships between different data sets and testing for errors and duplicate records. Retrieving instances of data from the database is another key responsibility in database programming.

What is the best programming language to build a database

Answer (1 of 20): I think most of the people answering here do not understand the question properly. He wants to develop his own database like oracle / mysql / mongodb etc. When building database you need performance and low level control over your data and record locking mechanism (if multiple

Best cloud databases of 2022 | ITProPortal

Scalable storage with the best cloud providers. The best cloud databases make it simple and easy to store different types of data in different ways, and to prioritize how data is queried. 1

10 Best Database Monitoring Tools for Professionals

You’ll also learn ten of the best database monitoring tools available, and you’ll be able to choose the best one for your needs. Defining Database Monitoring. Let’s start with the basics. Database monitoring is the process of monitoring database performance. Keeping track of important performance metrics gives you the chance to improve on

The Best Database Management Software of 2022 –

The program is also best suited for beginning and intermediate database administration, so advanced applications and customization of databases can be extremely time-consuming. Companies with a hierarchy system of information can create security hierarchies so that groups may only access certain information.

Database Management Tutorial | Best Resource for Learning DBMS

Database Management is a software which is used to manage all the databases. This software system acts as an interface and provides the security and consistency to the user while using the databases. A good commercial Database Management system has inbuilt support for data backup and recovery. Some of the most common database Management systems

Best Way to Learn SQL (According to Seasoned Devs

Finding the best way to learn SQL is tricky because everyone learns things differently. But, after training tens of thousands of students — seeing what works and what doesn’t — we’ve come up with a few easy steps that anyone can follow. Here’s the best way to learn SQL: Step 1: Determine why you want to learn SQL

Learn Databases

Learn Database Systems with Implementation and Examples by Bouchrika. by Imed Bouchrika April 8, 2014. The main motivation behind writing this book is to teach the basic concepts of database systems through concrete and practical knowledge and…. by Imed Bouchrika April 8, 2014.

16 Best Database Management Software & Tools for 2022

Databases are widely used by businesses to store reference data and track transactions. Websites need databases and Enterprise Resource Planning (ERP) systems need them.. The Database Management System (DBMS) is the software that formats data for storage in databases and gives access to it through data retrieval methods.It is difficult to get an overview of your data through command line SQL.

13 Best MySQL/SQL Projects for Beginners –

11. Intermediate Relational Database and SQL. Rating: 4 out of 5. In this intermediate SQL project, you will learn to create and maintain MySQL, MS Access, and Oracle. It emphasizes the importance of primary keys and foreign keys in relational databases.

Top Databases Used In Machine Learning Projects

One of the most critical components in machine learning projects is the database management system. With the help of this system, a large number of data can be sorted and one can gain meaningful insights from them. According to the Stack Overflow Survey report 2019, Redis is the most loved database, whereas MongoDB is the most wanted database.

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10 Best Online SQL Courses in 2022 [Updated]

“Learn SQL” is a perfect online course to learn about SQL and database implementation. The authors have used pro-level database examples like the Startup Trends databases to help the students learn about the real business problems related to the subject.

13 Good Resources to Learn SQL and NoSQL – Geekflare

It will help you learn the skills of NoSQL database, CRUD, MongoDB architecture, schema design, data modeling, Sharding and query, ingestion, and indexing with real-world case studies. The course aims to introduce you to MongoDB experts’ roles in an organization, design schema with advanced queries, and troubleshoot performance problems.

What are the best sites to learn Oracle SQL and PL/SQL

Answer (1 of 30): 1. Vertabelo Academy Vertabelo Academy offers interactive SQL courses, available directly in the browser. You can learn about SQL queries, data management, and table creation. Check out how to learn SQL.The “SQL Basics” course starts with simple queries, progressing through GRO

The 9 Best MySQL Books for 2022 Based on Real User Reviews

SQL: Learn SQL (using MySQL) in One Day and Learn It Well. OUR TAKE: With more than 600 ratings and 4.5 stars, this is one of the most popular MySQL books on the market. This title shows you the basics of SQL fast through concepts, which are presented in a concise manner. “The best way to learn SQL is by doing.

Best Database Administration Courses Online | Beginner

Learn about database administration from top-rated IT instructors. Whether you’re interested in preparing for the Oracle DBA 11g/12C, or becoming a Db2 or SQL pro, Udemy has a course to prepare you for a lucrative career as a database administrator.

10 Best Databases for Machine Learning & AI (2022) – Unite.AI

Here’s a list of the 10 best databases for machine learning & AI: 1. MySQL. Powered by Oracle, MySQL is one of the most popular databases on the market. Created in 1995, it has consistently been one of the top open-source relational database management systems (RDBMS) used by major companies like Facebook, Twitter, Uber, and Youtube.

Understanding Transactional Database: 5 Important Points

In this article, you will be introduced to databases, Transactional Databases, and components of ACID Compliance. You will learn what Database Transactions are, ways to optimize Transactional Database Performance, and some of the popular Transactional Databases.

Top 5 Websites to Learn SQL Online for FREE – Best of Lot

4. SQL Course from Khan Academy Khan Academy, one of the best websites to learn computer science and programming online also has a good SQL tutorial with the title “Intro to SQL: Querying and managing databases”. In this tutorial, you’ll learn how to use SQL to store, query, and manipulate data.

SQL For Beginners: Discover The Best Way To Learn SQL Basics

3,827 People Used. Only 12 Left. In my honest opinion, the best way to learn SQL for beginners is by enrolling in and working through an online course. Online courses offer a wide range of features and other resources that you can draw on to help you discover how to learn SQL.

The Best Way to Learn SQL – Learn to code in 30 Days

So, here’s the best way to learn SQL and advance your career in database management. It is not only for tech nerds, SQL is a programming language that every human on the planet should learn. Why? SQL is a simple, easily learned language. It is used to search through large amounts of data. Think of SQL as being like Google search for a database.

The Best Books for Learning MySQL Database – Java

The Best Books for Learning MySQL Database. . I prepared a list of the best books with author names for learning, optimizing, troubleshooting, and administrating your MySQL database. Most of these books are in my home library. Books for Beginners.

8 Best SQL Certifications 2022: Reviews and Pricing

For more information and to start learning, check out Database Foundations by Oracle Academy. Choosing the Best SQL Certification in 2022. Despite being limited to a specific type of database and the programming language that accompanies it, SQL database training is actually really useful in various job sectors.

SQL Tutorial: Learn SQL For Free | Codecademy

Why Learn SQL? We live in a data-driven world: people search through data to find insights to inform strategy, marketing, operations, and a plethora of other categories. There are a ton of businesses that use large, relational databases, which makes a basic understanding of SQL a great employable skill not only for data scientists, but for

5 Best MySQL Courses for Programmers – DZone Database

That’s all about some of the best courses to learn SQL and MySQL databases yourself. As I said, in today’s world, good knowledge of SQL is a must. It’s even more important than learning a

Top Python Database Projects For Beginners – upGrad blog

Python Database Projects for Beginners 1. General-Purpose Database Systems. These general-purpose database systems aim to meet the needs of different and varied applications. They are complex software systems that are highly expensive. But the entire cost is distributed among many users, making them the most suitable and fit for a large

Database Management System Tutorial

Database Management System or DBMS in short refers to the technology of storing and retrieving usersí data with utmost efficiency along with appropriate security measures. This tutorial explains the basics of DBMS such as its architecture, data models, data schemas, data independence, E-R model, relation model, relational database design, and storage and file structure and much more.

10 Useful Websites for Learning PostgreSQL Database System

PostgreSQL (also known as Postgres) is the world’s most popular and advanced open-source enterprise-grade object-relational database management system (ORDMS).PostgreSQL has a broad variety of community and commercial support choices accessible for users.. The PostgreSQL community and other online learning resource providers, provide many helpful resources to become familiar with PostgreSQL

Database Certification Courses Training – Learn Database

The best Database course online to learn for beginners is SQL. If you are a beginner and wish to pursue a career as a DBA or any other job profile, then you should most-definitely have knowledge and experience in SQL. It is the highest used query language in the world today, and it is extremely easy to learn and implement as well.

Database Management Online Training Courses | LinkedIn

Our Database Management online training courses from LinkedIn Learning (formerly provide you with the skills you need, from the fundamentals to advanced tips. Browse our wide selection

Learn SQL: SQL Best Practices for Deleting and Updating data

To avoid that, you should stick to SQL best practices. Before you decide to perform mass deletes/updates of data in your database, it would be good that you back up all tables where changes are expected. After changes are performed, you should compare the old and the new table. If everything went OK, you can delete the backup tables.

Need to learn SQL. Best option? : learnprogramming

Stanford has a nice set of self-paced “mini-courses” if you are looking for a more academic/systematic approach to learning SQL and relational databases. You can pick and choose the topics that interest you and the problems are very well thought-