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== Task Details ==
=== Extend SQLSchemaManager to support PostgreSQL ===
Create a new class PostgreSQLSchemaManager by extending SQLSchemaManager and implementing all necessary abstract classes
=== Research and add Maximum column Precision ===
Following are the Maximum column precisions we might need to establish:
(All constants are defined in PostgreSQLAdapter class)
* DEFAULT_FETCH_SIZE
* MAX_CHAR_PRECISION
* MAX_VARCHAR_PRECISION
* MAX_BINARY_PRECISION
* MAX_VARBINARY_PRECISION
* MAX_REAL_PRECISION
* TIMESTAMP_FORMAT_SQL
* TIMESTAMP_FORMAT
=== Figure out Data Type Mapping ===
* Go over all data types offered in PostgreSQL
* Map types defined in <code>Primitive</code> class
=== Implement <code>appendColumnType()</code> method ===
This method appends a table column type declaration to a string buffer.
* use logic and mapping to append required column data types to incoming string.
* Test it
