Oracle SQL Developer

Create/Edit ViewNext: Time for the next automatic refresh operation. The interval between the Start onand Next times establishes the interval for subsequent automatic refresh operations. Ifyou do not specify a value, the refresh operation is performed only once at the timespecified for Start on.Materialized View Options:Parallel: If this option is checked, parallel operations will be supported for thematerialized view, and you can specify a number for the default degree of parallelismfor queries and DML on the materialized view after creation.Enable Cache: If this option is checked, the blocks retrieved for this table are placed atthe most recently used end of the least recently used (LRU) list in the buffer cachewhen a full table scan is performed. This setting is useful for small lookup tables. Ifthis option is not checked, the blocks are placed at the least recently used end of theLRU list.Build Type: Specifies when to populate the materialized view. Immediate indicatesthat the materialized view is to be populated immediately. Deferred indicates that thematerialized view is to be populated by the next refresh operation. If you specifyDeferred, the first (deferred) refresh must always be a complete refresh; until then, thematerialized view has a staleness value of unusable, so it cannot be used for queryrewrite.Enable Query Rewrite: If this option is checked, the materialized view is enabled forquery rewrite, an optimization technique that transforms a user request written interms of master tables into a semantically equivalent request that includes one or morematerialized views.Prebuilt Option: If this option is checked, an existing table is registered as apreinitialized materialized view. This option is particularly useful for registering largematerialized views in a data warehousing environment. The table must have the samename and be in the same schema as the resulting materialized view, and the tableshould reflect the materialization of a subquery. Reduced Precision authorizes the lossof precision that will result if the precision of the table or materialized view columnsdo not exactly match the precision returned by subquery. No Reduced Precisionrequires that the precision of the table or materialized view columns match exactly theprecision returned by subquery, or the create operation will fail.Index Storage Options:Use index storage: If this option is checked, you can specify storage parameters for thedefault index that is used to maintain the materialized view data and to speed upincremental (fast) refresh of the materialized view. You can specify either the defaultsettings or custom settings for the tablespace, the initial and subsequent extent size,and the percentage of free space to allocate initially in each extent.DDL tabIf you are editing an existing view or if you have only partially created a view, this tabcontains a read-only display of a SQL statement that reflects the current definition ofthe view.To save the SQL statement to a script file, click Save and specify the location and filename.Related TopicsDatabase ObjectsSQL Developer User InterfaceDialog Boxes for Creating/Editing Objects 3-21