eolas/Databases/Relational_Databases/Relational_database_architecture.md

---
categories:
  - Databases
tags: [relational-databases]
---

# Relational database architecture

Tables, fields and records are the basic building blocks of databases

![](/_img/FL-Databases-1.5_terminology.gif)

## 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. Sometimes called **row** interchangeably.

## Field

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.

Each individual field has **properties:** such as the data type, length or the total memory allocation.