Parallel data base record distribution method and parallel data base management system

A database management method for use in a database management system having first and second storage area for storing a database, comprising the steps of:

• computing a difference between an amount of records stored in said first storage area and an amount of records stored in said second storage area;
• and
• when a request for adding a record is input, determining which one of said first and second storage areas to which a record should be stored, based on a computation result of the difference.

A database management system having a first storage area for storing a database, comprising:

• a detection unit which detects a second storage area added to database system , and alters record assignment of records in such a manner that a number of records to be assigned to said second storage area is greater than a number of records to be assigned to said first storage area;
• and
• a control unit, responsive to when a request for adding a record is input, storing said record selectively in one of said first and second storage areas based on the manner of record assignment.

A recording medium storing a database management program in a database management system having a first storage area for storing a database, wherein said program when executed causes said database management system to perform the steps of:

• detecting a second storage area added to said database management system, and altering record assignment of records in such a manner that a number of records to be assigned to said second storage area is greater than a number of records to be assigned to said first storage area;
• and
• when a request for adding a record is input, storing said record selectively in one of said first and second storage areas based on the manner of record assignment.

A database management method for use in a database management system having a first storage area for storing a database, comprising the steps of:

• detecting a second storage area added to said database management system, and altering record assignment of records in such a manner that a number of records to be assigned to said second storage area is greater than a number of records to be assigned to said first storage area;
• and
• when a request for adding a record is input, storing said record selectively in one of said first and second storage areas based on the manner of record assignment.

A database management method for use in a database management system having a first storage area for storing a database, said method comprising the steps of:

• detecting a second storage area added to said database management system, and altering record assignment of records in such a manner that a number of records to be assigned to said second storage area is greater than a number of records to be assigned to said first storage area;
• and
• when a request for adding a record is input, storing said record selectively in one of said first and second storage areas based on the manner of record assignment.

A database management method for use in a database management system having a first storage area for storing a database, comprising the steps of:

• detecting a second storage area added to said database management system, and altering record assignment of records in such a manner that a number of records to be assigned to said second storage area is greater than a number of records to be assigned to said first storage area;
• and
• when a request for adding a record is input, storing said record selectively in one of said first and second storage areas based on the manner of record assignment.