anchor.diff:  | +dropTable+| Drops an existing table|N
   | +dropUniqueConstraint+| Drops an existing unique constraint|N
   | +dropView+| Drops an existing view |N
  +| +alterSequence+           | Alter properties of an existing sequence |N
   | +modifyDataType+| Modify data type|N
   | +renameColumn+| Renames an existing column|N
   | +renameTable+| Renames an existing table|N
   | +renameView+| Renames an existing view |N
  +|===
  +
  +
  +++++
  +</div></div>
  +
  +<div class="col cardcommands c2-1 c3-3 c4-3 c5-3 c6-3"><div class="blk">
  +++++
  +
  +[options="header", cols="3"]
  +|===
  +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
   |===
   
   ++++
  
positive.code: <div class="col cardcommands c2-2 c3-2 c4-2 c5-2 c6-2"><div class="blk">
  ++++
  
  [options="header", cols="1,2,1"]
  |===
  3+| DDL CHANGES
  | *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
  
negative.code: | +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
  |===
  
  
  ++++
  </div></div>
  
  <div class="col cardcommands c2-2 c3-2 c4-2 c5-2 c6-2"><div class="blk">
  ++++
  
  [options="header", cols="3"]
  |===
  3+| DDL - DROP/UPDATE
  | *CHANGE*| *DESCRIPTION*|*ROLLBACK*
  | +dropAllForeignKeyConstraints+| Drops all foreign key constraints for a table |N
  | +dropColumn+| Drop an existing column |N
  | +dropDefaultValue+| Removes the database default value for a column|N
  