1. Transaction fact table (figure 7.2)
Ch 7 Ideas
Transaction fact table (figure 7.2)
Periodic Snapshot fact table (figure 7.1)
February 2004
Ron McFadyen

2. An intelligent key where components might indicate The account
General Ledger
Chart of accounts
An intelligent key where components might indicate
The account
One subrange might indicate assets
Another indicates liabilities
The account type …
February 2004
Ron McFadyen

3. General Ledger example
Chart of accounts is decomposed into its various parts
G/L account dimension
G/L organization dimension
G/L organization
G/L account
G/L organization key
G/L center name
G/L center number
Department name
Department number
Division name
Business unit name
Company name
G/L account key
G/L account name
G/L account category
G/L account type
Referred to a fixed-depth hierarchy that is implemented with separate attributes
If it were a ragged hierarchy then a bridge table would be necessary
February 2004
Ron McFadyen

4. General Ledger example
Text example also suggests multiple sets of books may be supported. Hence the G/L dimension
G/L
G/L key
G/L book name
February 2004
Ron McFadyen

5. General Ledger example
Figure 7.2 (modified slightly) G/L transaction: one row for each G/L journal entry
G/L
Post date
G/L key
G/L book name
Post date key
Post date attributes …
Effective date
G/L journal entry
G/L organization
effective date key
effective date …
G/L organization key
G/L center name
G/L center number
Department name
Department number
Division name
Business unit name
Company name
…FKs…
Journal entry number (DD)
Journal entry amount
G/L account
G/L account key
G/L account name
G/L account category
G/L account type
Debit-Credit Indic
Debit-credit indic key
Debit-credit indic desc
February 2004
Ron McFadyen

6. General Ledger example
Figure 7.1 G/L periodic snapshot – captures the status of the accounts at specific times.
G/L
G/L key
G/L book name
Accounting Period
Accounting Period key
Accounting Period number
Accounting Period description
Accounting Period Fiscal Year
G/L snapshot
G/L organization
G/L organization key
G/L center name
G/L center number
Department name
Department number
Division name
Business unit name
Company name
Balance amount
Debit amount
Credit amount
Net change amount
G/L account
G/L account key
G/L account name
G/L account category
G/L account type
February 2004
Ron McFadyen

7. General Ledger example
How is Figure 7.1 derived from Figure 7.2?
The snapshot has four amounts: balance, debit, credit, net change
What is the period dimension?
February 2004
Ron McFadyen

8. From Data warehouse design solutions – Adamson & Venerable
Figure 9.1 shows a normalized model that might be used in a business
Figure 9.2 shows an intelligent key typical of accounting systems
Figure 9.3 shows two transaction fact tables: one for assets, one for liabilities
They share a number of dimensions
February 2004
Ron McFadyen

9. From Data warehouse design solutions – Adamson & Venerable
Figure 9.1 1
Division n
AuthorizedAccounts n 1
Account 1 n
GL transaction
February 2004
Ron McFadyen

10. From Data warehouse design solutions – Adamson & Venerable
Figure 9.2
L-G00199
Each component of the key has particular meaning to the end user: internal division, department, …
February 2004
Ron McFadyen

11. From Data warehouse design solutions – Adamson & Venerable
Figure 9.3
Analysis of the chart of accounts can lead to an easier to manage dimensional model
Asset account
Asset party
Asset facts
Account key
Financial system id
Name
Asset type …
Asset party key
Name
Type
City … …
Transaction amount
liability facts …
Transaction amount
Effective date
Account owner
Transaction type
Liability party
Liability account
February 2004
Ron McFadyen