Oracle SQL Developer

Create/Edit Table (with advanced options)Indexes: Lists the indexes currently defined on the table. To add an index, click theAdd Index (+) icon; to delete an index, select it and click the Remove Index (X) icon.Note: After you add an index, to add another index, click the AddIndex (+) icon.Name: Name of the index. Must be unique within the schema.Index: A list of index expressions, that is, the table columns or column expressions inthe index. To add an index expression, click the Add Column Expression (+) icon; thisadds a column name here and in Column Expression, where you can edit it. To deletean index expression, click the Remove Column Expression (X) icon; to move an indexexpression up or down in the list click the Move Column Up and Move Column Downicons. An index must have at least one index expression.For example, to create an index on the AUTHOR_LAST_NAME column of the Bookstable from the tutorial (see Creating a Table (Books)), click the + icon, and selectAUTHOR_LAST_NAME in Column Name or Expression (next field), which changesBOOKS to AUTHOR_LAST_NAME in the Index field.Column Name or Expression: A column name or column expression. A columnexpression is an expression built from columns, constants, SQL functions, anduser-defined functions. When you specify a column expression, you create afunction-based index.Order: ASC for an ascending index (index values sorted in ascending order); DESC fora descending index (index values sorted in descending order).Storage Options tabSpecifies storage options for the table, enabling you to override the default storageoptions.Tablespace: Name of the tablespace for the table.Pct Free: Percentage of space in each of the data blocks of the table reserved for futureupdates to the rows of the table. You can enter a value from 0 through 99.Pct Used: Minimum percentage of used space that Oracle maintains for each datablock of the table. A block becomes a candidate for row insertions when its used spacefalls below the Pct Used value. You can enter a value from 1 through 99.Extents - Initial: Size of the first extent of the table. Specify K (kilobytes) or M(megabytes) for the unit associated with the number.Extents - Next: Size of the next extent to be allocated to the table. Specify K (kilobytes)or M (megabytes) for the unit associated with the number.Extents - Min: Minimum number of extents allocated when the table is created.Extents - Max: Maximum number of extents allocated when the table is created.Unlimited (if checked) means that there is no maximum (and any specified maximumis ignored).Pct Increase: Percentage that each extent grows over the previous extent.Ini Trans: Number of update transaction entries for which space is initially reserved inthe data block header.Max Trans: Number of transaction entries that could concurrently use data in a datablock. This parameter has been deprecated. Oracle Database now automatically allowsDialog Boxes for Creating/Editing Objects 3-13