eolas/zk/Relational_database_architecture.md

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---
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categories:
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- Databases
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tags: [relational-databases]
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---
# Relational database architecture
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Tables, fields and records are the basic building blocks of databases
![](/_img/FL-Databases-1.5_terminology.gif)
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## Table
A group of similar data with rows for **records** and columns for each
**field**.
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## 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. Sometimes called **row** interchangeably.
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## Field
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A vertical column: stores a single particular unit of data for each record. Each
field must use the same data type. Sometimes called **field** interchangeably.
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Each individual field has **properties:** such as the data type, length or the
total memory allocation.