Unit 2 - Data Types Flashcards
What are the different Data Types?
Short Text Memo Number Date/Time Currency Auto Number Yes/No OLE Object Hyperlink Attachment Calculated Lookup Wizard
Short Text
General purpose field contain any data item made up of letters and/or numbers and/or characters
Use this type for numeric entries that will not have calculations performed on them, such as telephone numbers
Memo
Where more that 255 characters is needed to store text values
Number
Flexible field size of 1,2,4,8 or 16 bytes
Can also hold symbols used as helpers for umbers such as decimal points
Date/Time
Any data item that will be a date or a time
Currency
Used to store monetary data
Autonumber
This data type generates an automatically incremented numeric counter
This data type will provide a unique value that serves no other purpose than to make each record unique
The most common use for an this datatype is as a primary key
Yes/No
Used to store a Boolean Value
OLE Object
Can be used to show a picture or link directly to an external document
Hyperlink
Can be used to link a field to an external website or email address
Attachment
Can attach multiple documents to a record
Calculated
Used to store the results of a calculation
Lookup Wizard
Used to create a drop down box in forms later on