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Oracle Tutorials - Categories of Data Types in PL/SQL

By: FYIcenter.com

(Continued from previous topic...)

How Many Categories of Data Types?

PL/SQL data types are grouped into 4 categories:

  • Scalar Data Types: A scalar data type holds a single value.
  • Composite Data Types: A composite data type has internal components, such as the elements of an array.
  • LOB Data Types: A LOB data type holds a lob locator that specify the location of a large object.
  • Reference Data Types: A reference data type holds a pointer that points to another data object.

(Continued on next topic...)

  1. Is PL/SQL Language Case Sensitive?
  2. How To Enter Comments in PL/SQL?
  3. What Are the Types of PL/SQL Code Blocks?
  4. What Is an Anonymous Block?
  5. What Is a Named Program Unit?
  6. What Is a Procedure?
  7. What Is a Function?
  8. How To Declare a Local Variable?
  9. How To Initialize Variables with Default Values?
  10. How To Assign Values to Variables?
  11. What Are the Arithmetic Operations?
  12. What Are the Numeric Comparison Operations?
  13. What Are the Logical Operations?
  14. How Many Categories of Data Types?
  15. How Many Scalar Data Types Are Supported in PL/SQL?
  16. How To Convert Character Types to Numeric Types?
  17. What Are the Execution Control Statements?
  18. How To Use "IF" Statements on Multiple Conditions?
  19. How To Use "WHILE" Loop Statements?
  20. How To Use "FOR" Loop Statements?
  21. What Is NULL in PL/SQL?
  22. How To Test NULL Values?

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