SQL – Structured Query Language
What does SQL mean?
SQL, which stands for “Structured Query Language,” is a special programming language used to manage data in a relational database management system (RDBMS).
SQL was first built on relational algebra and tuple relational calculus. It has a language for defining data and a language for changing data. SQL lets you insert, query, update, and delete data, create and change schemas, and control who has access to what data.
What does SQL do?
Here are some of the most important reasons to use SQL
- It makes it easier for users to get to data in the RDBMS system.
- It helps you explain what the data means.
- It lets you define the information in a database and change that information.
- With SQL, you can make databases and tables and also delete them.
- You can use the function in a database, make a view, or use a stored procedure.
- Tables, procedures, and views can all have permissions set.
Merits of SQL
SQL has a lot of benefits, which is why it is so popular and in high demand. It is a safe and effective language that is used to talk to the database. Here are some good things about SQL:
Faster Query Processing: A lot of data is quickly and effectively retrieved. It also takes almost no time to do things like insert, delete, and change data.
No Coding Skills: You don’t need a lot of lines of code to get the data you want. SQL uses all of the basic keywords, like SELECT, INSERT INTO, UPDATE, etc., and its syntax rules are not hard to understand, which makes it easy to use.
Standardized Language: Because it is written down and has been around for a long time, it gives all of its users around the world the same platform. It can be used in programs on PCs, servers, and laptops, no matter what platform they are on (Operating systems, etc). Also, it can be combined with other apps based on what is needed or used.
A language that’s fun to use: It’s easy to learn and understand, and it can answer even the most complicated questions in seconds.
Demerits of SQL
SQL has a lot of good points, but it also has a few bad ones. Some problems with SQL are as follows:
The interface that is hard to use: SQL has a hard interface that makes some users feel uncomfortable when using the database.
Cost: Some versions cost a lot of money, so programmers can’t use them.
Partial Control: The database doesn’t have full control because there are business rules that are kept secret.