Title: Describe the necessity for database constraints.
Course: Database Design and Management (Oracle) (10052) > Section: Defining Database Constraints

Description should include following:

- Recollection of data-modeling principles provides data integrity by constraining what users may input into a certain column.
- Constraints enforce rules on data in a table whenever a row is inserted, updated, or deleted from a table.
- Constraints can prevent the deletion of a table if there are dependencies from another table.