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0926 Database Keywords

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0926 Database Keywords

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About this activity

Words about Databases.

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Singapore

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0926 Database Keywords
 

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0926 Database KeywordsOnline version

Words about Databases.

by Jonathan Dunsby
1

Assigned to field in which data is unique - not repeated. Often fields such as ID are used.

  
  
2

A link between tables/entities using a primary and foreign key.

3

This allows new records - data entered to the database - it contains all the same fields as table.

     
  
  
4

A diagram showing the entities(tables) and their relationships(links) to other tables within the database.

  
  
5

Ensuring relationships between tables are valid and consistent, requiring foreign key values to reference existing primary key values in another table

  
  
6

A diagram/table - pictorial representation of the a database - including fields - datatypes - validations etc.

  
  
7

A key which is assigned to a field which is the same as a primary key in another field. - Creating a relationship and referential integrity.

  
  
8

Breaks a records into particular categories/sections - such as Name, DOB, Address, ID_Number

9

The format of the data which will be entered into the field - DATE/NUMERIC/BOOLEAN/TEXT/ALPHANUMERIC

10

A method which prevents the wrong data being entered into the system e.g. Datatype, Field Length, Format, Rule.

11

A database stores many of these and they are broken down into several fields and stored in a suitably named table.

12

A form of validation - used when a field cannot remain blank - it must have data. A * symbol is used on such fields of a data entry form.

13

Use to extract/take specific data from the database using specific filed and criteria.

  
  
14

These are create using query results and can be formatted to suit a given purpose/audience.

15

A validation which check the correct number of letter/characters or numbers have been entered. E..G A phone number

  
  
16

A validation that checks if the data have been entered in the correct order and type. E.G. A fin number: Letter - 7 numbers - Letter

  
  
17

These allows the database to perform/do equations using mathematical operators and functions such as Avg.

  
  
18

More than 1 of these allows you to create a Relational Database if they are linked. They stored records and organise Data using Fields - They should have a suitable name bases on the Records they store. E.G Films.

19

A customer can make several orders.

     
  
  
20

A car can have a Registration number,

     
  
  
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