Edit/Add new attribute values on CORE DATA

[sapateira]

Hello, guys. I thank you in advance and apologize for being a complete Noob on Core Data.

Say i have an simple database with only one entity called DATA.
That entity has few couple of attributes.

• Some attribute values will be automatically saved as soon as application launches like Date and some other stuff i find necessary.

• Other attribute values will be saved along the way. Like the User Name and keep a record of buttons the user touches on each UIView.

I'm saving those values like this:

[DATA setValue:now forKey:@"DATE"];

The problem is when save the following values in different UIViews (with the same kind of code) those values aren't associated with the ones i saved before.

I'm thinking of it as Table. I save info for the first Columns but when i save other info i'm creating another Row instead of completing the Columns of the previous Row.

How can i add new data to the remaining columns of one Row???
How can i edit the data entered in that Row ???