adplus-dvertising
frame-decoration

Question

A BCNF is :

a.

loss less join and dependency preserving

b.

loss less join but not dependency preserving

c.

not loss less join but dependency preserving

d.

none of these

Posted under DBMS

Answer: (b).loss less join but not dependency preserving

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. A BCNF is :

Similar Questions

Discover Related MCQs

Q. Every Boyee-Codd normal form is in

Q. Needing to using more complicated SQL in database applications is a(n) ________ of normalization.

Q. Eliminating modification anomalies is a(n) ________ of normalization.

Q. Multivalued dependencies should ________ be eliminated.

Q. When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the:

Q. When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the:

Q. Creating a read-only database is a task that is ________ assigned to beginning database professionals.

Q. Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?

Q. For a number of reasons, normalizations is not often an advantage for a(n) ________ database.

Q. Most of the time, modification anomalies are serious enough that tables should be normalized into:

Q. Each answer below shows example data from a table. Which answer is an example of the missing values problem?

Q. When assessing the table structure of an acquired set of tables with data, determining functional dependencies is (part of) the:

Q. Each answer below shows example data from a table. Which answer is an example of the multivalue, multicolumn problem?

Q. When assessing the table structure of an acquired set of tables with data, counting the number of table rows is (part of) the:

Q. If a table has been normalized so that all determinants are candidate keys, then that table is in:

Q. Read-only databases are ________ updated.

Q. Needing to assess the validity of assumed referential integrity constraints on foreign keys is a(n) ________ of normalization.

Q. When assessing the table structure of an acquired set of tables with data, determining primary keys is (part of) the:

Q. Normalization ________ data duplication.

Q. Each answer below shows example data from a table. Which answer is an example of the inconsistent values problem?