Class 12

By default, are Java assertions enabled or disabled at runtime?

A minimal superkey — one from which no attribute can be removed without losing the uniqueness property — is called a:

A program that can perform multiple tasks concurrently using independent parts is called:

If a relation has multiple candidate keys, one of them is designated as the:

Which of these is one of the two ways to create a thread in Java?

Which constraint specifies that the value of every attribute in a tuple must come from the domain of that attribute?

Which method must be overridden when creating a thread class (whether extending Thread or implementing Runnable)?

Which constraint specifies that the primary key of a relation cannot have a NULL value?

Which method is called to actually START the execution of a thread (after creating it)?

A constraint specified between two relations, involving a foreign key referencing a primary key of another relation, is called:

Which method of the Thread class causes it to suspend execution for a specified number of milliseconds?

A foreign key value, according to the referential integrity constraint, must either:

Classes created by extending the Thread class cannot be extended further; which alternative method of thread creation avoids this limitation?

In a table where a foreign key references the primary key of the SAME table (e.g., Manager_ID referencing Employee_ID), the table is called a:

A wrapper class in Java is used to:

A relation can have more than one key (candidate key), but only one is chosen as the primary key.

Which wrapper class corresponds to the primitive data type 'boolean'?

The set of all attributes of a relation is always a valid superkey.

Which wrapper class corresponds to the primitive data type 'char'?

Referential integrity requires that the foreign key attribute and referenced primary key attribute must have the same name.