April 2003
Beginner to intermediate
620 pages
21h 48m
English
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Chapter 24. The DataColumn Class
The DataColumn class
defines the schema for a column in a DataTable.
This schema defines the type of data that can be stored in the
column, whether that data can be updated, any unique constraints on
the data, and how values should be generated for new rows added to
the table. Columns can be based on expressions that define a
calculation or an aggregation for a column value.
As with all disconnected data classes, the
DataColumn isn’t specific to any
data provider
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.