Which of the following is a small program embedded within a GIF image ?

A(n)…….accesses the database and data dictionary in a DBMS as they exist on a storage device.

A text or an image which, when clicked, takes the user to another Website/page………….

The……….key in a relational database links one table to another.

Which one of the following control steps is usually not performed in data warehousing applications

Map entities, attributes and relations in Oracle is represented by ………….