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Codd defined a relational model based on mathematical set theory. In his seminal 1970 paper "A Relational Model of Data for Large Shared Data Banks," E. Also, these systems lacked a simple query language, which hindered application development. Because no data definition language existed, changing the structure of the data was difficult. The preceding database management systems stored data in rigid, predetermined relationships. Each parent record has one or more child records, similar to the structure of a file system.Ī network database is similar to a hierarchical database, except records have a many-to-many rather than a one-to-many relationship. The first generation of database management systems included the following types:Ī hierarchical database organizes data in a tree structure.
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ORACLE DATABASE SCHEMA SOFTWARE
This language enables applications to access the data.Ī database application is a software program that interacts with a database to access and manipulate data. This repository is usually called a data dictionary.
ORACLE DATABASE SCHEMA CODE
This code manages memory and storage for the DBMS.
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Typically, a DBMS has the following elements: Select dbms_metadata.get_ddl('PROFILE', u.A database management system (DBMS) is software that controls the storage, organization, and retrieval of data. Select to_clob('/* Start profile creation script in case they are missing') AS ddl Select dbms_metadata.get_granted_ddl('DEFAULT_ROLE', rp.grantee) AS ddl Select dbms_metadata.get_granted_ddl('OBJECT_GRANT', tp.grantee) AS ddl Select dbms_metadata.get_granted_ddl('SYSTEM_GRANT', sp.grantee) AS ddl Select dbms_metadata.get_granted_ddl('ROLE_GRANT', rp.grantee) AS ddl Select dbms_metadata.get_granted_ddl('TABLESPACE_QUOTA', tq.username) AS ddl Select dbms_metadata.get_ddl('USER', u.username) AS ddl set long 20000 longchunksize 20000 pagesize 0 linesize 1000 feedback off verify off trimspool onĭbms_t_transform_param (dbms_ssion_transform, 'SQLTERMINATOR', true) ĭbms_t_transform_param (dbms_ssion_transform, 'PRETTY', true) a USER, you could use dbms_metadata.get_ddl.Įxecute the following script in SQL*Plus created by Tim Hall: To generate the DDL script for an entire SCHEMA i.e. WHERE (OWNER = 'XYZ') AND OBJECT_TYPE NOT IN('LOB','MATERIALIZED VIEW', 'TABLE PARTITION') ORDER BY OBJECT_TYPE, OBJECT_NAME SO, Consolidated query for generating DDL will be: SELECT OBJECT_TYPE, OBJECT_NAME,DBMS_METADATA.GET_DDL(OBJECT_TYPE, OBJECT_NAME, OWNER) GET_DDL Function doesnt support for some object_type like LOB,MATERIALIZED VIEW, TABLE PARTITION FOR ALL FUNCTION SELECT DBMS_METADATA.GET_DDL('FUNCTION', OBJECT_NAME) FROM USER_PROCEDURES WHERE OBJECT_TYPE = 'FUNCTION' FOR ALL MATERILIZED VIEWS SELECT QUERY FROM USER_MVIEWS FOR ALL VIEWS SELECT DBMS_METADATA.GET_DDL('VIEW', VIEW_NAME) FROM USER_VIEWS FOR ALL INDEXES SELECT DBMS_METADATA.GET_DDL('INDEX', INDEX_NAME) FROM USER_INDEXES WHERE INDEX_TYPE ='NORMAL' FOR ALL TABLES SELECT DBMS_METADATA.GET_DDL('TABLE', TABLE_NAME) FROM USER_TABLES If you want to individually generate ddl for each object, Don't be surprised if you need to add some more exceptions to the above code. Exporting objects can be tricky when advanced features are used. Put everything in a script and run it via cron (scheduler). Then replace the schema name with another one via sed. You can spool the schema out to a file via SQL*Plus and dbms_metadata package.