Karteikarten
Databases
Karten in diesem Stapel (19)
- 1FieldAn object or thing of importance about which data is captured
- 2RecordAll data about one item in a database
- 3Primary KeyA field in a table which uniquely identifies each record in that table
- 4DatabaseA persistent, organised store of data in electronic form
- 5EntityAn object or thing of importance about which data is captured
- 6FormUser interface tool which allows a user to enter or change data in a table
- 7Flat FileType of database which contains only one table
- 8Foreign KeyA field used in one table to represent the value of a primary key in a related table
- 9QueryDatabase management tool used to retrieve
- 10ValidationA method be trying to make the minimum about of mistakes and to make sure that data entered is sensible and reasonable
- 11VerificationA way of making sure that something is correct by typing it in again, for example re-entering a password.
- 12Input MaskIs a form of validation that tells you the format they want you to enter the data in, for example dd/mm/yyyy
- 13Presense CheckIt checks the data that has been entered. For example if a field required is black the system will notify the user that the field is blank and will not send the application until done.
- 14Range CheckChecks if the variable entered falls within a certain range of time.
- 15List CheckA list check is where data is entered into a field from a predetermined list of options and ensures that only valid data can be entered into a field
- 16Data integrityThe correctness of data in a database
- 17Data RedundencyWhere data is repeated unnecessarily in a database
- 18DBMSThis is a software application that is designed to; interact with database users, capture, extract and analyse data and can interact with software applications
- 19What does DBMS stand forDataBase Management System
Informationen
- Beschreibung
- GCSE Computer Science Karteikarten am Databases, erstellt von Connor Kilsby am 11/01/2017.
- Erstellt von
- Connor Kilsby
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