What are different types of Tables?

There are 4 types of tables in siebel
1) Base Table (Ex: s_contact, s_user)
2) Extension table ( Ex: s_contact_x)
3) EIM tables
4) Intersection Tables (Ex: s_org_bu)

In general tables are of 4 types

1. Data Table

2. Repository Table

3. Interface Table

4. Warehouse Table