DBMAINT Mode - DATACOM/DB Structure Maintenance › Modify Structures

Modify Structures

The occurrences you define have both modifiable and non-modifiable attribute-values. The non-modifiable attribute-values are assigned internally by CA Datacom Datadictionary. In DBMAINT Mode, the modifiable attributes that are important to CA Datacom/DB are displayed on the panels when you select the ADD, CREATE, DEFINE, or MODIFY functions.

How to Use

Use one of the following procedures to perform this function:

• Select the MODIFY option on the Structure Functions Menu Panel for the selected structure or substructure. Fill in the prompter panel, and update the MODIFY panel.
• Use the MODIFY command (see MODIFY) for the structure or substructure and update the MODIFY panel.
• Type the MOD margin command in the line number of the occurrence on a structure or index display panel. Enter the PROCESS command (press PF4), and update the MODIFY panel.

After completing your entries on a MODIFY panel, press PF9 (APPLY). If there are no errors, you receive a message confirming the success of the function.

Since the MODIFY panel displays the same attributes you use to define the structure or substructure, see the following for explanations of the attributes about the panel.

• Create DATABASE Structures
• Add AREA Substructures
• Add TABLE Substructures
• Add KEY Substructures
• Add ELEMENT Substructures
• Create DATAVIEW Structures

Note: You cannot modify certain attribute-values of SQL accessible tables that have constraints. See the CA Datacom/DB Database and System Administration Guide for information.

Updating Other Attributes

You can modify all attributes for an occurrence, except a FIELD occurrence, with the UPDATE ATTRIBUTE function. Use a FIELD Maintenance Panel to update the attribute-values of AFTER, CLASS, LENGTH, PARENT, REDEFINES, and REPEAT attribute-types for FIELD occurrences. To obtain an Attribute Update Panel, either process the ATT margin command on a structure or index display, enter an UPDATE ATTRIBUTE command (see UPDATE) or select the option through the ENTMAINT Mode. For more information, see Update Attribute-Values.

All attributes and their values for an occurrence are displayed with the new values for modifiable attributes after you apply your changes to an Attribute Update panel. You can obtain an Attribute Display panel by processing a DAT margin command on a structure or index display panel, by issuing a DISPLAY ATTRIBUTE command (see In ENTMAINT and ENTDISPL Modes) or select the option through the ENTDISPL or ENTMAINT Modes.

When you complete your entries, press PF9 (APPLY). If there are no errors, you receive a message confirming the success of the function.