DATABASES

3. A __________ identifier makes each row in an entity one of a kind.
6. A central processing ______ is a core part of every computer.
9. A copy of data from database that can be used to reconstruct it.
10. An object which represents data related to the same topic.
11. Processes connected with retrieving data from database, data modification and loading into target database.
12. A synonym to simultaneous.
15. A type of data model which includes all entities, their attributes and relationships between those entities, with respect to business requirements.
16. (key) A column or combination of columns which uniquely identifies a record in a database.
18. A type of relationship between two entities in which each row in one table can be related to many rows in the relating table.
21. Another word for performance optimizing
22. A type of database which runs on a virtualized computing platform.

1. A tool which allows humans to interact with computers.
2. A set of rules set up by the database administrator which specify the levels of access that individuals or groups of users should have to use the computer system.
4. Duplication of data in a database.
5. A request for information from a database.
7. A type of DBMS which stores the entire database in RAM to improve speed of data retrieval.
8. Another word for repository for data or information.
13. A connection between two tables in a relational database.
14. A single row of data from a table.
17. A modelling language with rich notation and set of diagrams available for various purposes.
19. A DBMS which is used for storing data in the form of objects is called _______-oriented DBMS.
20. A complete logical data model with all entities, their attributes and relationships between those entities.