Updating databases in

This lets you change a column name in one place and have it propagate throughout your code.A good way to organize a contract class is to put definitions that are global to your whole database in the root level of the class.This is primarily to allow parse rules to be tested, but it also verifies that the download URL works or that the manually copied files have the correct names and security settings / permissions.Drop-down help is provided for each element in the configuration pages.

This functionality can cause your existing applications to stop working correctly.A contract class is a container for constants that define names for URIs, tables, and columns.The contract class allows you to use the same constants across all the other classes in the same package.When Amazon Relational Database Service (Amazon RDS) supports a new version of a database engine, you can upgrade your DB instances to the new version.There are two kinds of upgrades: major version upgrades and minor version upgrades.