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When you use Core Data with SQLite database as underlying data store, core data will autogenerate some columns...
One of them is "Z_ENT" and another is "Z_OPT"
I believe "Z_OPT" is for how many times the record has been altered. Can anyone tell me what Z_ENT is for?
Thanks!
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Core Data can use SQLite as its persistent store, but the framework itself is not a database. Core Data is not a database. Core Data is a framework for managing an object graph. An object graph is nothing more than a collection of interconnected objects. The framework excels at managing complex object graphs.
Although Core Data supports SQLite as a store type, the store format—like those of the other native Core Data stores—is private. You cannot create a SQLite database using the native SQLite API and use it directly with Core Data, nor should you manipulate an existing Core Data SQLite store using native SQLite API.
"Z_PK is the unique id for each, Z_ENT is their entity id (same as what’s listed in the Z_PRIMARYKEY table"
From here
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