The                            system is widely used for mapping from Java objects to relations.

Related MCQs

• A relational database system needs to maintain data about the relations, such as the schema of the relations. This is called
• A relational database system needs to maintain data about the relations, such as the schema of the relations. This is called
•              is a special type of integrity constraint that relates two relations & maintains consistency across the relations.
• ………………… is a special type of integrity constraint that relates two relations & maintains consistency across the relations.
• ………………… is a special type of integrity constraint that relates two relations & maintains consistency across the relations.
• Department (dept name, building, budget) and Employee (employee_id, name, dept name, salary) Here the dept_name attribute appears in both the relations. Here using common attributes in relation schema is one way of relating ___________ relations.
• Department (dept name, building, budget) and Employee (employee_id , name, deptname,salary) Here the dept_name attribute appears in both the relations .Here using common attributes in relation schema is one way of relating ___________ relations.
• A                  is a logical grouping of database objects, usually to facilitate security, performance, or the availability of database objects such as tables and indexes.
• A ________ is a logical grouping of database objects, usually to facilitate security, performance, or the availability of database objects such as tables and indexes.
• Entity Relationship model consists of collection of basic objects called _________ and relationship among these objects.