Write the answers only. $(1$ mark per question$)$

$2\mathrm{.}1.$ What is a data structure that follows the Last In$,$ First Out $($LIFO$)$ principle?

$2\mathrm{.}2.$ What type of database model represents data as tables with rows and columns?

$2\mathrm{.}3.$ What is the process of analyzing data to discover useful patterns and insights?

$2\mathrm{.}4.$ What is a data structure that follows the First In$,$ First Out $($FIFO$)$ principle?

$2\mathrm{.}5.$ What is a technique used in database management to prevent concurrent access to shared data?

$2\mathrm{.}6.$ What is the fundamental topic covered in Chapter $1?$

$2\mathrm{.}7.$ What type of list uses a continuous block of memory for its elements?

$2\mathrm{.}8.$ What is the primary function of a database management system $($DBMS$)?$

$2\mathrm{.}9.$ What is the primary purpose of indexing in file structures?

$2\mathrm{.}10.$ What is a database management system designed to work with objects and classes