5 lecture

What is database?

• A section of a computer's memory

• ... •is a collection of information organized and presented to serve a specific purpose.

• ... is a software program that manages the hardware and software resources of a computer

• ... is a software program that manages the hardware and software resources of a computer

A database model- is…

• The lowest level of any operating system is its kernel

• Output Devices

• Carries out control after the actions of computer

• a type of data model that determines the logical structure of a database

The most popular example of a database model

• relational model

• Hierarchical database model

• Network

• Object-oriented model

Wich of this model is a hierarchial model

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the network data model:

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Database Terms

• model, network, relational

• rows, columns,

• tables, forms, query, reports, macros, module

• cells, fields

A ... is a graphical user interface used to enter (and view) data

• table

• form

• report

• query

A table is made up of several ...

• queries

• records

• tables

• reports