Create a database structure

What is a Database?

A database is store of data that has been organised (sorted) in some way.


Databases of data are held on a computer.

Example of a database with stored data.

The database below shows you an example of stored medical patients data:




Database Structures (Files/Tables, Records, Fields, Data)



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Databases are so useful because they store data in a structured way.When data is structured (organised) it can be manipulated easily and then output in different.ways







Files/Tables


collection of records and fields is called a file.
Database files are viewed as tables


Database Records






A database record shows all the data about one person or object.



Database Fields


Database fields hold/store the single items of data that make up a record.


             












Primary key:










































































































The relation between Tables























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Steps  of  creating relationship between Tables




























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