Practical - 4 Implement SQL Queries for ALTER, UPDATE, DELETE, DROP, and SELECT Commands
Implement SQL Queries for ALTER, UPDATE, DELETE, DROP, and SELECT Commands Aim To study and implement SQL commands ALTER , UPDATE , DELETE , DROP , and SELECT for modifying database structures, manipulating records, deleting data, removing database objects, and retrieving information from relational database tables. Objectives After completing this experiment, students will be able to: Understand the purpose of SQL DDL, DML, and DQL commands. Modify the structure of an existing table using the ALTER command. Update existing records using the UPDATE command. Delete specific or multiple records using the DELETE command. Permanently remove database objects using the DROP command. Retrieve and display records using different forms of the SELECT command. Apply filtering, sorting, and projection techniques while retrieving data. Understand the importance of the WHERE clause in SQL commands. Theory Introduction to SQL Commands Structured Query Language (SQL) is the standard langu...