Tutorial 3-may2025.pdf Tutorial document describing PL/SQL exercises and learning objectives. Tutorial 5-may2025.pdf Tutorial document with exercises involving functions like calculating total orders ...
ALTER TABLE employee ADD (exp NUMBER,salary NUMBER(8,2)); --> 2.ii ALTER TABLE table_name MODIFY col_name new_dtype; --> ALTER TABLE table_name MODIFY(col_name1 new_dtype1,col_nname2 new_dtype2); ...
If you look at the large variety of SQL commands, they can be divided into three large subgroups. 1) Data Definition Language deals with database schemas and descriptions of how the data should reside ...