Databases Flashcards
What are databases made up of and how do they link
Items of data made up of field
Fields make up records
Records are stored in files
How is a query made
Asking a database to find chosen specific data . Done by asking database questions using specific criteria that describes the data being looked for. Boolean or logical per actors use to compare criteria you have set
What do relational databases do
Keep data in tables that are related to each other.
What is a primary key
Field in a record that holds unique data and allows that record to be indetified among all other records
What are secondary and foreign keys used for
Secondary - keys are used for sorting
Foreign- used to link tables
What are databases
Files of data that are manipulated by data management software
