Oracle SQL Developer

Database Objects1.2.9 Recycle Bin1.2.10 SequencesThe Recycle bin (applicable only to Oracle Database Release 10g) holds objects thathave been dropped (deleted). The objects are not actually deleted until a commitoperation is performed. Before the objects are actually deleted, you can "undelete"them by selecting them in the Recycle bin and selecting Undrop from the right-clickmenu.You can perform the following operations on an object in the Recycle bin byright-clicking the object name in the Recycle bin in the Connections navigator andselecting an item from the menu:■■Purge: Removes the object from the Recycle bin and deletes it.Undrop: Moves the object from the Recycle bin back to its appropriate place in theConnections navigator display.Sequences are used to generate unique integers. You can use sequences toautomatically generate primary key values. For conceptual and usage informationabout sequences, see Managing Sequences. For help with specific options in creatingand editing a sequence, see Create/Edit Sequence.1.2.11 Synonyms (Public and Private)Synonyms provide alternative names for tables, views, sequences, procedures, storedfunctions, packages, materialized views, Java class database objects, user-definedobject types, or other synonyms. The Connections navigator has a Synonyms node forall synonyms (public and private) owned by the user associated with the specifiedconnection, and a Public Synonyms node for all public synonyms on the databaseassociated with the connection. For conceptual and usage information aboutsequences, see Managing Synonyms. For help with specific options in creating andediting a synonym, see Create/Edit Synonym.1.2.12 TablesTables are used to hold data. Each table typically has multiple columns that describeattributes of the database entity associated with the table, and each column has anassociated data type. You can choose from many table creation options and tableorganizations (such as partitioned tables, index-organized tables, and external tables),to meet a variety of enterprise needs. To create a table, you can do either of thefollowing:■Create the table quickly by adding columns and specifying frequently usedfeatures. To do this, do not check Show Advanced Options in the Create Tabledialog box. For help with options for creating a table using this quick approach,see Create Table (quick creation).■ Create the table by adding columns and selecting from a larger set of features. Todo this, check Show Advanced Options in the Create Table dialog box. For helpwith options for creating a table with advanced features, see Create/Edit Table(with advanced options).You can perform the following operations on a table by right-clicking the table name inthe Connections navigator and selecting an item from the menu:■Edit: Displays the Create/Edit Table (with advanced options) dialog box.SQL Developer Concepts and Usage 1-9