#coaching sql

SQL : Structures Query Language used to perform only DDL, DML, DQL, TCL & DCL..So on but in day today day life SQL is not sufficient to solve our problems.

PL/SQL: Procedural Language Structured Query Language is an extension for SQL.

1. Language

SQL is a structured language support looping and conditional statements.

PL/SQL is a procedural language supports looping and conditional statements, such as (range base loops, condition base loops ).

2. Execution:

In SQL we cannot execute one or more that one statement at a time.

Where as in PL/SQL we can execute number of statements, with the use of (procedures, functions, packages, cursors…..)

3. Error Messages:

SQL always gives system error messages while any wrong transaction. Users cannot understand these system error messages.

Whereas with PL/SQL , we can convert these system error messages into user friendly error messages with the excellent concept called EXCEPTION HANDLING.

4. Code Reusability

SQL doesn’t support code reusability, it means we need to write insert , update, delete, select each and every time.

Where as in PL/SQL supports code reusability. it means writing the code only one time and reusing the same code again and again whenever u want to do the same operations.

5. Interaction

SQL interacts with a Database server

Pl/SQL has no interaction with the database server

6.  Example

SQL - SELECT * FROM STUDENT WHERE Age>=18;

PL/SQL - CREATE OR REPLACE PROCEDURE hello AS BEGIN dbms_output.put_line('Hello World!'); END;

In short day life problems cannot be solved or difficult to solve by just using SQL.

To learn more about SQL and PL/SQL TCCI is Best Place where you can learn Basic concepts of SQL and DBMS.

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SQL : Structures Query Language used to perform only DDL, DML, DQL, TCL & DCL..So on but in day today day life SQL is not sufficient to solve our problems.

PL/SQL : Procedural Language Structured Query Language is an extension for SQL.

1. Language

SQL is a structured language support looping and conditional statements.

PL/SQL is a procedural language supports looping and conditional statements,…