$1\mathrm{.}4$ Describe the Telationship between the database and DBMS$.$

$1\mathrm{.}5$ What are the main components of a database system?

$17$ What are the steps in the development of database system?

$18$ Explain the iterative nature of the database requirements collection, definition and visualization process.

$1\mathrm{.}9$ What is the purpose of conceptual database modeling?

$1\mathrm{.}10$ What is the purpose of the logical database modeling?