The data layer of the Siebel Repository defines the physical schema of tables, columns, and indexes for storing customer, administrative, and repository data. Developers must understand how the objects of this layer and their relationships establish the physical foundation for the business layer. Configuration activities on this layer are limited to additive changes. This means that developers are only allowed to create new tables or columns but not to modify data layer objects defined by Oracle engineering.
This chapter is structured as follows:
Understanding tables, columns, and indexes
Considerations for custom schema changes
Using preconfigured extension tables
Creating custom columns
Creating custom indexes
Creating custom tables
Applying schema changes to local and server databases