726 B
726 B
| categories | tags | ||
|---|---|---|---|
|
|
Relational database architecture
Tables, fields and records are the basic building blocks of databases
Table
A group of similar data with rows for records and columns for each field.
Record
A horizontal row: a collection of items which may be of different data types all relating to the individual or object that the record describes. A single entry in the table.
Field
A vertical column: stores a single particular unit of data for each record. Each field must use the same data type.
Each individual field has properties: such as the data type, length or the total memory allocation.