Standard actions to be used for navigating and manipulating datasets derived from external databases
TDataSetAction - base class for all other standard TDataSet actions
DataSource - the locally-stored series of records forming the DataSet, derived (by a query) from the external database
TDataSetFirst - move to first record in the DataSet
TDataSetLast - move to last record in the DataSet
TDataSetNext - move to next record in the DataSet
TDataSetPrior - move to previous (prior) record in the DataSet
TDataSetRefresh - refresh the DataSet by reference to the external database
TDataSetCancel - cancel the previous operation on the DataSet
TDataSetDelete - delete the current record in the DataSet
TDataSetEdit - edit the current record in the DataSet
TDataSetInsert - insert (append) a new record into the DataSet
TDataSetPost - post the editing changes on the current record permanently into the DataSet (may need a separate action to make changes permanently in external database)