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1. CREATE - to create objects in the database
2. ALTER - alters the structure of the database
3. DROP - delete objects from the database
4. TRUNCATE - remove all records from a table, including all spaces allocated for the records are removed
5. COMMENT - add comments to the data dictionary
6. RENAME - rename an object
Data Manipulation Language (DML) statements are used for managing data within schema objects. Some examples:
1. SELECT - retrieve data from the a database
2. INSERT - insert data into a table UPDATE - updates existing data within a table
3. DELETE - deletes all records from a table, the space for the records remain
4. MERGE - UPSERT operation (insert or update)
5. CALL - call a PL/SQL or Java subprogram
6. EXPLAIN PLAN - explain access path to data
7. LOCK TABLE - control concurrency
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