- A Query Processing Method For Grouping And Aggregation Operations In Object-Relational Database Systems Using Reverse Pointers

摘要

The invention object - using a special storage structure of reverse pointer (inverse pointer) provided in the relational database-related to a method to efficiently process the grouped (grouping) operation, the object of the data in the relational database management system (DBMS) the object - to enhance the grouping operation speed of the relational database management system (DBMS), a grouping operation method, and to provide the obtained aggregate function method with the group table created in the method, the target class to create a group table a first step of reading an object that satisfies the condition of the group table; A second step of generating a group of the group table based on the group attribute value included in the object; And a third step of storing the pointer included in the reverse point of the object in the group in the group table, yiyongdoem such database management systems.