SQL
SQL is the standard language for relational database management systems and is used to connect with databases.
Structured Query Language (SQL) is a special-purpose programming language for managing data in a relational database management system (RDBMS) or stream processing in a relational data stream management system (RDSMS).
SQL is a data definition language and a data manipulation language that was originally based on relational algebra and tuple relational calculus. Data insert, query, update, and delete, schema development and change, and data access control are all covered by SQL. SQL is commonly regarded as a declarative language (4GL), which it is to a certain extent, but it also has procedural aspects.
PL/SQL
SQL is combined with procedural aspects of programming languages to form PL/SQL. Oracle Corporation was responsible for its creation.
PL/Specialties SQL's
A high-performance transaction-processing language that is totally portable. It provides a built-in interpreted and OS agnostic programming environment. It may be accessed directly from the SQL*Plus command-line interface. External programming languages can also make direct calls to the database. The language's general grammar is inspired by the ADA and Pascal computer languages. Apart from Oracle, it is available in TimesTen in-memory database and IBM DB2.
T-SQL
Transaction-SQL is an expanded version of SQL that includes declared variables, transaction control, error and exception handling, and row processing.
SQL stands for Structured Query Language, and it is a computer language for handling relational databases. SQL has its own limits, which prompted Microsoft to construct extensions on top of SQL to improve its capability. Transact-SQL, or T-SQL, is a Microsoft extension to SQL that adds code. Keep in mind that T-SQL is proprietary and under Microsoft's control, whereas SQL, although being created by IBM, is already an open standard.
T-SQL provides a number of capabilities that are not accessible in SQL.
It is entirely up to the user to choose between T-SQL and SQL. When working with Microsoft SQL Server installations, T-SQL is still the superior option. This is because T-SQL is also a Microsoft product, and combining the two improves compatibility. People that work with different backends prefer SQL.
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