1.5 The Key component of DBMS: A. The end users B. Data Administrator C. Database Architecture D. Data dictionary and database Language 1.6 When a primary data field of a database file is entered into another database file to create a relation between the 2 databases, the primary data field in the other database is known as a A. field name B. data record C. foreign key D. an attribute 1.7A is used to update/change a master file. A. history file B. database file C. reference file D transaction file 1.8 Select the CORRECT statement regarding a data warehouse. A. Data warehouse is read-only B. A data warehouse is smaller than a data mart C. Security and Integrity of the data warehouse are not that crucial D. Data can be modified in the data warehouse by using the correct tool