Q1. What do you understand by data validation? How can you use data validation in BASE?
Ans. In a database, data validation refers to a process of ensuring that only valid data is entered in a table. You can ensure data validation by setting the field properties of your tables such that only valid data can be entered by the users. For example, if you set the Yes value for the Entry required property, it will ensure that users enter some value in this field during data entry. However, if you specify No as a value for this field, then the user can skip this field.