Method and apparatus for automatically generating database definitions of indirect facts from entity-relationship diagrams

• US 5,535,325 A
• Filed: 12/19/1994
• Issued: 07/09/1996
• Est. Priority Date: 12/19/1994
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Lin, Shihta, Neuchterlein, Bruce E., Cromer, William R., Cattell, Kevin T., Potok, Thomas E.
• Primary Examiner(s): Bayerl, Raymond J.
• Assistant Examiner(s): KATBAB, ABDOLLAH
• Application Number:
  US08/358,273
• Time in Patent Office: 568 Days
• Field of Search: 395/161, 395/155, 395/600
• US Class Current: 1/1
• CPC Class Codes: G06F 16/288 Entity relationship models
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface
• CPC Class Codes: Y10S 715/967 Visual or iconic programming

Abstract

A computer-implemented process accepts information input from an existing ER model of data representing a given environment and, in response to the input, automatically creates a new database structural definition that represents indirect facts about a base entity that are indicated by the input.

Claims

1. In a computer system comprising a computer processor, a database storage, a display and input means, a program memory and a program loaded therein wherein said loaded program automatically generates and displays on said display a database definitional plan for indirect facts associated with the database entity data, a computer process comprising steps performed in said computer of:

generating in said processor of said computer and displaying on said display means a first graphical placeholder block in a database definitional diagram for a user identified target indirect fact regarding a user identified target entity in an entity-relationship (ER) model of the user'"'"'s business environment;

generating in said processor and displaying on said display means a second graphical placeholder block in a database definitional diagram for an indirect fact derivation argument;

generating in said processor and displaying on said display means a third graphical placeholder block in a database definitional diagram for an indirect fact derivation argument for an associative entity type relationship link;

generating in said processor and displaying on said display means a graphical path connecting said first graphical placeholder block to the said base entity of said database definitional diagram;

generating in said processor and displaying on said display means a graphical path connecting said second graphical placeholder block to said first graphical placeholder block;

generating in said processor and displaying on said display means a graphical path connecting said third graphical placeholder block to said first graphical placeholder block;

generating in said processor and displaying on said display means a graphical path connecting said third graphical placeholder block to the first relationship link representational block in said database definitional diagram encountered in a traverse of said diagram from said base entity of said diagram to said first graphical placeholder block; and

generating in said CPU and displaying on said display means a graphical path connecting said second graphical placeholder block to said user identified target entity.

2. A process as described in claim 1, further comprising when said indirect fact type sought by said user is an indirect relationship of an entity, comprising further steps of:

generating in said processor and displaying on said display means a fourth graphical placeholder block in a database definitional diagram for an associative entity type;

generating in said processor and displaying on said display means a fifth graphical placeholder block for a relationship link; and

generating in said processor and displaying on said display means a graphical connection from said first graphical placeholder block to said fourth placeholder block and from said fourth placeholder block to said fifth placeholder block, said connections being a part of said graphical path connecting said first placeholder block to said base entity of said database definitional diagram.

3. A process as described in claim 1, wherein:

said process further includes steps of receiving user inputs identifying a name for the user'"'"'s requested indirect fact type, an identification of the base entity with which said indirect fact type is connected, and an identification of the target indirect fact type for which retrieval is sought.

4. A process is described in claim 2, wherein said process further includes steps of:

said process further includes steps of receiving user inputs identifying a name for the user'"'"'s requested indirect fact type, an identification of the base entity with which said indirect fact type is connected, and an identification of the target indirect fact type for which retrieval is sought.

5. A CASE tool comprising instructions encoded on a computer-readable medium for automatically generating database definitional diagrams from ER diagrams on the display of a computer system, said tool comprising means for performing steps of:

generating in said computer and displaying on said display means a first graphical placeholder block in a database definitional diagram for a user requested indirect fact regarding a user identified target entity in an entity-relationship (ER) model of the user'"'"'s business environment;

generating in said processor and displaying on said display means a second graphical placeholder block in a database definitional diagram for an indirect fact derivation argument;

generating in said processor and displaying on said display means a third graphical placeholder block in a database definitional diagram for an indirect fact derivation argument for an associative entity type relationship link;

generating in said processor and displaying on said display means a graphical path connecting said first graphical placeholder block to the said base entity of said database definitional diagram;

generating in said processor and displaying on said display means a graphical path connecting said second graphical placeholder block to said first graphical placeholder block;

generating in said processor and displaying on said display means a graphical path connecting said third graphical placeholder block to said first graphical placeholder block;

generating in said processor and displaying on said display means a graphical path connecting said third graphical placeholder block to the first relationship link representational block in said database definitional diagram encountered in a traversed of said diagram from said base entity of said diagram to said first graphical placeholder block; and

generating in said processor and displaying on said display means a graphical path connecting said second graphical placeholder block to said user identified target entity.

6. A CASE tool as described in claim 5, and further comprising:

generating in said computer and displaying on said display means a fourth graphical placeholder block in a database definitional diagram for an associative entity type;

generating in said computer and displaying on said display means a fifth graphical placeholder block for a relationship link; and

generating in said computer and displaying on said display means a graphical connection from said first graphical placeholder block to said fourth placeholder block and from said fourth placeholder block to said fifth placeholder block, said connections being a part of said graphical path connecting said first placeholder block to said base entity of said database definitional diagram.

7. A CASE tool as described in claim 5, wherein:

said process further includes steps of receiving user inputs identifying a name for the user'"'"'s requested indirect fact type, an identification of the base entity or relationship with which said indirect fact type is connected, and an identification of the target indirect fact type for which retrieval is sought.

8. A CASE tool as described in claim 6, further including:

said process further includes steps of receiving user inputs identifying a name for the user'"'"'s requested indirect fact type, an identification of the base entity or relationship with which said indirect fact type is connected, and an identification of the target indirect fact type for which retrieval is sought.

9. In a computer system comprising a computer processor, a database storage, a display and input means, a program memory and a program loaded therein wherein said loaded program automatically generates a database definitional plan for indirect facts associated with the database entity data, a computer process comprising steps performed in said computer of:

generating in said processor of said computer a first graphical placeholder in a database definitional diagram for a user requested indirect fact regarding a user identified target entity in an entity-relationship (ER) model of the user'"'"'s business environment;

generating in said processor a second graphical placeholder in a database definitional diagram for an indirect fact derivation argument;

generating in said processor a third graphical placeholder in a database definitional diagram for an indirect fact derivation argument for an associative entity type relationship link;

generating in said processor a graphical path connecting said first graphical placeholder to the said base entity of said database definitional diagram;

generating in said processor a graphical path connecting said second graphical placeholder to said first graphical placeholder;

generating in said processor a graphical path connecting said third graphical placeholder to said first graphical placeholder;

generating in said processor a graphical path connecting said third graphical placeholder to the first associative entity type representational block in said database definitional diagram encountered in a traversed of said diagram from said base entity of said diagram to said first graphical placeholder; and

generating in said processor a graphical path connecting said second graphical placeholder to said user identified target entity.

10. A CASE tool comprising instructions encoded on a computer-readable medium for automatically generating database definitional diagrams from ER diagrams on the display of a computer system, said tool comprising means for performing steps of:

generating in said computer a first graphical placeholder in a database definitional diagram for a user requested indirect fact regarding a user identified target entity in an entity-relationship (ER) model of the user'"'"'s business environment;

generating in said computer a second graphical placeholder in a database definitional diagram for an indirect fact derivation argument;

generating in said computer a third graphical placeholder in a database definitional diagram for an indirect fact derivation argument for an associative entity type relationship link;

generating in said computer a graphical path connecting said first graphical placeholder to the said base entity of said database definitional diagram;

generating in said computer a graphical path connecting said second graphical placeholder to said first graphical placeholder;

generating in said computer a graphical path connecting said third graphical placeholder to said first graphical placeholder;

generating in said computer a graphical path connecting said third graphical placeholder to the first associative entity type representational block in said database definitional diagram encountered in a traversed of said diagram from said base entity of said diagram to said first graphical placeholder; and

generating in said computer a graphical path connecting said second graphical placeholder to said user identified target entity.