Core data updating entities
This would include DQL commands like CREATE, INSERT, UPDATE, DELETE, etc.Lets take a look at two different methods to retrieve data using a SELECT statement.This method is exclusively for SQLite databases, and my SQL databases. The main difference between the two is that SQLite databases are embedded in the application, and they’re one standalone file.
You just need an array on each playlist that keeps track of what videos are on its playlist and in what order. It seems to me that the only reason a video would need to know what playlists it belonged to is if you wanted to provide some functionality for a video to quickly find all playlists it belonged to.
The whole point of this is to make use of the database, so lets take a look at the sqlite3_exec command. You would think that you’d use this command in all cases, but that is not true.
This is only viable for SQL statements that do not return any data.
Locate your i OS SDK on your system and go to usr/lib/libsqlite3.dylib.
To access a database, we first have to open the connection to it within the code. The code simply looks like this: There is no reason to open and close a database without making any meaningful changes.