![]() ![]() Indexes can be created explicitly or automatically. An Oracle server index is a schema object that can speed up the retrieval of rows by using a pointer. Index: This database object is used to create a indexes in database. SELECT sequence_name, min_value, max_value,Ĥ. The sequence is generated and incremented (or decremented) by an internal Oracle routine. A typical usage for sequences is to create a primary key value, which must be unique for each row. A sequence is a user created database object that can be shared by multiple users to generate unique integers. Sequence: This database object is used to create a sequence in database. ] ĪS SELECT employee_id ID_NUMBER, last_name NAME,ģ. ![]() The view is stored as a SELECT statement in the data dictionary.ĬREATE VIEW view The tables on which a view is based are called base tables. A view contains no data of its own but is like a window through which data from tables can be viewed or changed. A view is a logical table based on a table or another view. View: This database object is used to create a view in database. Table: This database object is used to create a table in database.Ģ. Synonym – Alternative name for an objectġ.Index – Improves the performance of some queries.Sequence – Generates primary key values.View – Logically represents subsets of data from one or more tables.Table – Basic unit of storage composed rows and columns.Some of the examples of database objects are: view, sequence, indexes, etc. It can be used to hold and manipulate the data. Anything which we make from create command is known as Database Object. A database object is any defined object in a database that is used to store or reference data. ![]()
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