Schemas:

The base installation of Base4 is useful primarily for its file and assembly management features. However by registering new schemas you can extend a Base4 server to provide access to custom databases. A schema contains types and is essentially a way to package logically related types, for example a HR schema might include the following types: SalaryPackage, LeaveRequest, DisciplinaryAction etc.

Schemas are used to package and deploy new functionality to wrap:

• New database tables
• Legacy database tables

The principle used by Base4 is similar to that of .NET assemblies. You can build schemas up that use and potentially extend other schemas. In fact when a schema is registered a corresponding .NET assembly is created along with any database changes required to support that assembly. The schema’s assembly will reference any assemblies associated with any of schemas the new schema references.