Keys and relationships

Select the primary key from the fields in the given database

• Name

• Birth

• Hight

• none

What is a primary key?

if you can't find a primary key from your exciting fields, you can create a new field for this purpose, we usually refer to it as _____

Which of these is likely a primary key for the Databse?

• Birthday

• driver's license number

• last name

• Birthday

What is a Database?

• A database is a spreadsheet.

• A database is a spreadsheet.

• A database is an organized collection of data.

 

_______ contains all the data relating to a single person or object.

 

____________ relationship is where a single record of a table is related to a single record of another table.

• One to One

• One to many

It is a relationship means a record in Table A can relate to zero, one, or many records in Table B.

• One to one

• One to many

Q. 

What type of table relationship is presented?

• one to one

• one to many