Non-destructive data storage

1. A method for non-destructive data storage including:

storing, on a storage device, an information change associated with a business object such that tracking of the information change is enabled with respect to an effective time, wherein a transaction associated with the information change comprises one or more of the following: storing a change to an attribute or storing a change to a relationship, wherein the storing comprises storing to an instance of the business object and includes storing the effective time and storing a transaction time, wherein the effective time associated with the transaction comprises a time when the change to the attribute or the change to the relationship specified in the transaction is indicated to be effective, wherein the transaction time is a time when the storing of the transaction is requested or executed, and wherein the tracked information includes information enabling determination of a state of information associated with the business object at a particular time; and

accessing the attribute or the relationship, wherein the attribute or the relationship accessed is based at least in part on the effective time; and

determining the state of information associated with the instance of the business object effective at an inquire time, wherein a chain of effective changes is scanned through in order to find a relevant information associated with the instance of the business object at the inquire time.

2. The method as in claim 1 , wherein storing the information change includes storing the transaction time associated with the information change.

3. The method as in claim 1 , wherein storing the information change includes storing the effective time associated with the information change.

4. The method as in claim 1 , wherein the effective time is earlier in time than the transaction time.

5. The method as in claim 1 , wherein the effective time is later in time than the transaction time.

6. The method as in claim 1 , wherein the effective time is at the same time as the transaction time.

7. The method as in claim 1 , wherein the information change comprises a change in human resource information.

8. The method as in claim 1 , wherein the information change comprises a change in financial information.

9. The method as in claim 1 , wherein the information change comprises a change in corporate information.

10. The method as in claim 1 , wherein the information change comprises a change in product or service information.

11. The method as in claim 1 , wherein the business object includes information related to a business requirement.

12. The method as in claim 1 , further comprising including the stored information change in a report.

13. A computer program product for non-destructive data storage, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for:

storing, on a storage device, an information change associated with a business object such that tracking of the information change is enabled with respect to an effective time, wherein a transaction associated with the information change comprises one or more of the following: storing a change to an attribute or storing a change to a relationship, wherein the storing comprises storing to an instance of the business object and includes storing the effective time and storing a transaction time, wherein the effective time associated with the transaction comprises a time when the change to the attribute or the change to the relationship specified in the transaction is indicated to be effective, wherein the transaction time is a time when the storing of the transaction is requested or executed, and wherein the tracked information includes information enabling determination of a state of information associated with the business object at a particular time; and

accessing the attribute or the relationship, wherein the attribute or the relationship accessed is based at least in part on the effective time; and

determining the state of information associated with the instance of the business object effective at an inquire time, wherein a chain of effective changes is scanned through in order to find a relevant information associated with the instance of the business object at the inquire time.

14. A system for non-destructive data storage including:

A processor configure to:

store, on a storage device, an information change associated with a business object such that tracking of the information change is enabled with respect to an effective time, wherein a transaction associated with the information change comprises one or more of the following: storing a change to an attribute or storing a change to a relationship, wherein the storing comprises storing to an instance of the business object and includes storing the effective time and storing a transaction time, wherein the effective time associated with the transaction comprises a time when the change to the attribute or the change to the relationship specified in the transaction is indicated to be effective, wherein the transaction time is a time when the storing of the transaction is requested or executed, and wherein the tracked information includes information enabling determination of a state of information associated with the business object at a particular time; and

accessing the attribute or the relationship, wherein the attribute or the relationship accessed is based at least in part on the effective time; and

determining the state of information associated with the instance of the business object effective at an inquire time, wherein a chain of effective changes is scanned through in order to find a relevant information associated with the instance of the business object at the inquire time; and

A memory coupled to the processor, wherein the memory is configured to provide the processor with instructions.