Database Reference
In-Depth Information
An attribute's data type determines what kind of data you can store in it and how
much space it will occupy on disk. In Core Data, an attribute's data type begins as
Undefined
so you'll have to change it to something else.
If you remember from
SampleData.plist
, each bow tie has eight associated pieces
of information. This means the
Bowtie
entity will end up with at least eight
attributes in the model editor.
Select
Bowtie
on the left-hand side and click the plus sign (+) under
Attributes
.
Change the new attribute's name to
name
and set its type to
String
:
Repeat this process five more times to add the following attributes:
•
A
Boolean
named
isFavorite
;
•
A
Date
named
lastWorn
;
•
A
Double
named
rating
;
•
A
String
named
searchKey
;
•
An
Integer 32
named
timesWorn
.
When you're finished, your Attributes section should look like this:
