The level of data abstraction which describes how the data is actually stored is:

To decompose a relation into several smaller relations without duplicity is:

The database that is a unification of several data files with any redundancy wholly or partially eliminated is:

A language that enables users to access or manipulate data is:

A tree is composed of a hierarchy of elements called:

If a transaction Ti has obtained a shared mode lock on item Q, then Ti:

A language in which the user requests information from the database is:

Ensuring that the updates are correct even during the failure period is referred to as:

The concept of a joined dependency is related to:

Polymorphism is defined as:

The system that processes transactions as soon as they are entered is: