LANSA uses access routes to describe relationships between tables in a database. Access routes are simply descriptions which answer questions such as "How do I access the associated records in table B, given that I have a record from table A?" They have no physical impact on the database.
A predetermined join column (PJC) [previously a predetermined join field (PJF)] is a special kind of virtual field based on access routes whose value is determined by a field in another table. (Ordinary virtual fields are always based on fields within its own table definition.)
Objectives:
To achieve these objectives, you will complete the following:
Step 1. Understand the Database Relationship
Step 2. Create Access Route from Department Table
Step 3. Create Access Route from Employee Table
Step 4. Create Fields in the LANSA Repository
Step 5. Add Table Lookup PJC to Employee Table
Step 6. Test New PJC in Employee Table
Step 7. Add PJCs to Department Table
Before you Begin
In order to complete this exercise, you must have completed the previous exercises.
