A sensible database schema conveys the reasonable constraints that apply to your stored facts. It might determine integrity constraints, views, and tables.three. Special Keys: Just about every desk features a primary crucial to uniquely determine Every history, making sure no duplicate rows.Consider a filing cupboard with folders that contains not

ALTER (RENAME) in SQL In SQL, producing structural variations to the database is often important. No matter whether It is really renaming a table or even a column, adding new columns, or modifying data kinds, the SQL ALTER TABLE command plays a vital position. This command offers adaptability to deal with and regulate database schemas without affec