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Creating an Opaque Data Type
In This Chapter
Opaque Data Types
The Internal Structure
A Fixed-Length Opaque Data Type
A Varying-Length Opaque Data Type
Support Functions
Operator Functions
Built-In Functions
Aggregate Functions
Statistics-Collecting Routines
End-User Routines
Advantages of Opaque Data Types
Creating an Opaque Data Type
Creating the Internal Structure in C
Data Type Size
Memory Alignment
Parameter Passing
Creating UDT-to-Java Mappings
Writing and Registering the Support Functions
Registering the Opaque Data Type with the Database
Registering the Opaque Data Type
Creating Casts for Opaque Data Types
Using Non In-Row Storage
Granting Privileges for an Opaque Data Type
Creating SQL-Invoked Functions
Arithmetic and Text Operator Functions for Opaque Data Types
Built-in Functions for Opaque Data Types
Aggregate Functions for Opaque Data Types
Conditional Operators for Opaque Data Types
Relational Operators for Opaque Data Types
Comparison Function for Opaque Data Types
Customizing Access Methods
Using the Generic B-Tree
Using Other Access Methods
Indexing Spatial Data
Indexing Other Types of Data
Other Operations on Opaque Data Types
Accessing an Opaque Data Type
Dropping an Opaque Data Type
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