OpenEdge Getting Started: Multi-tenancy Overview - Product ...

Chapter 1: Introducing multi-tenancy
Figure 1 depicts the allocation of data objects across storage areas in a multi-tenant
database with two defined tenants, ABC Corp and BUS Corp.
Default
Migrated data
Deallocated data
Shared
Data Physical Storage
Tenant : ABC Corp
Tenant : BUS Corp
A7
ABC
data
A11
BUS
data
A15
Default
data
A9
ABC
Indexes
A14
BUS
Indexes
A16
Default
Indexes
A17
Shared data
Figure 1: Physical storage in an multi-tenant database
A8
ABC
LOBs
A12
BUS
LOBs
A19
Default
LOBs
A18
Shared
Indexes/
Shared LOBs
The left-hand side of Figure 1 shows the logical representation of the database, and
shows two regular tenants and the default tenant. The Shared section represents data
that all tenants can access. The Shared section contains all non-multi-tenant data as
well as the database schema area.
The right-hand side of Figure 1 shows a representation of the physical storage of the
database. In this example, each tenant has a distinct area for each default area.
Note: Multi-tenant partitions must be stored in Type II areas. Shared data can be
stored in either Type I or Type II areas. The schema area is always a Type I
area.
36 OpenEdge Getting Started: Multi-tenancy Overview