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:

Normal forms are used to:

Projection operator:

Shadow paging is:

Which one is used to create complex entities?

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

The state while a transaction is executing is:

The role of a DBA is to:

Which one refers to the hashing in which the number of disk accesses needed to locate a specific record is never more than two?

A repository of information gathered from multiple sources stored under a unified schema at a single site is: