anchor.diff:  |===
   3+| DML CHANGES
   | *CHANGE*| *DESCRIPTION*|*ROLLBACK*
  -| +delete+ | Deletes data from an existing table|N
  -| +insert+ | Inserts data into an existing table|N
  -| +mergeColumns+ | Concatenates the values in two columns, joins them by with string, and stores the resulting value in a new column. |N
  -| +update+| Updates data in an existing table |N
  +| +delete+ | Deletes data from an existing table|-
  +| +insert+ | Inserts data into an existing table|-
  +| +mergeColumns+ | Concatenates the values in two columns, joins them by with string, and stores the resulting value in a new column. |-
  +| +update+| Updates data in an existing table |-
   |===
   
   ++++
  
positive.code: |===
  3+| DDL - CREATE
  | *CHANGE*| *DESCRIPTION*|*ROLLBACK*
  | +addAutoIncrement+   | Converts an existing column to be an auto-increment column|Y
  | +addColumn+         | Adds a new column to an existing table|Y
  | +addDefaultValue+    | Adds a default value to the database definition for the specified column. One of defaultValue, defaultValueNumeric, defaultValueBoolean or defaultValueDate must be set|Y
  | +addForeignKeyConstraint+| Adds a foreign key constraint to an existing column |Y
  | +addLookupTable+         | Creates a lookup table containing values stored in a column and creates a foreign key to the new table.|Y
  | +addNotNullConstraint+ | Adds a not-null constraint to an existing table. If a defaultNullValue attribute is passed, all null values for the column will be updated to the passed value before the constraint is applied.|Y
  | +addPrimaryKey+           | Adds creates a primary key out of an existing column or set of columns. |N
  | +addUniqueConstraint+           | Adds a unique constrant to an existing column or set of columns. |N
  | +createIndex+           | Creates an index on an existing column or set of columns. |N
  | +createProcedure+           | Defines the definition for a stored procedure. This command is better to use for creating procedures than the raw sql command because it will not attempt to strip comments or break up lines. |N
  | +createSequence+| Creates a new database sequence|N
  | +createTable+| Create Table|N
  | +createView+| Create a new database view|N
  |===
  
  
  
negative.code: |===
  3+| DDL - DROP/UPDATE
  | *CHANGE*| *DESCRIPTION*|*ROLLBACK*
  | +dropAllForeignKeyConstraints+| Drops all foreign key constraints for a table |-
  | +dropColumn+| Drop an existing column |-
  | +dropDefaultValue+| Removes the database default value for a column|-
  | +dropForeignKeyConstraint+| Drops an existing foreign key|-
  | +dropIndex+| Drops an existing index|-
  | +dropNotNullConstraint+| Makes a column nullable|-
  | +dropPrimaryKey+| Drops an existing primary key|-
  | +dropSequence+| Drop an existing sequence|-
  | +dropTable+| Drops an existing table|-
  | +dropUniqueConstraint+| Drops an existing unique constraint|-
  | +dropView+| Drops an existing view |-
  | +alterSequence+           | Alter properties of an existing sequence |-
  | +modifyDataType+| Modify data type|-
  | +renameColumn+| Renames an existing column|-
  | +renameTable+| Renames an existing table|-
  | +renameView+| Renames an existing view |-
  |===
  
  
  