CH1 - Data

Question 1

Database

Answer 1

a collection of related data

Question 2

Data

Answer 2

known facts that can be recorded and have an implicit meaning.

Question 3

Mini-world

Answer 3

some part of the real world about which data is stored in a database

Question 4

Database Management System (DBMS)

Answer 4

a software package/system to facilitate the creation and maintenance of a computerized database

Question 5

Database system

Answer 5

the DBMS software together with the data itself. Sometimes, the applications are also included.

Question 6

Queries

Answer 6

access different parts of data and formulate the result of a request

Question 7

Transactions

Answer 7

read some data and “update” certain values or generate new data and store that in the database

Question 8

Self-describing nature

Answer 8

a DBMS catalog stores the description of a particular database. The description is called meta-data. This allows the DBMS software to work with different database applications

Question 9

Insulation between programs and data

Answer 9

also called program-data independence, allows changing data structures and storages organization without having to change the DBMS access programs.