An ID-dependent Weak Entity typically result in a table with a compound primary key with at least one part of the PK also being a foreign key T or F

Consider the relation scheme R (A, B, C, D, E) and the set of functional dependencies F = { A → ВС; CD — E; В — D; E — А} on R. Find closure set of functional dependencies (F)+. What is the key for R?

2) A relation schema R is defined tot be in 2NF if every nonprime attribute of R is blank the primary key of R.A) transitively dependent on B) fully functionally dependent onC) a candidate key of D) partially functionally dependent onE) part of

Let A1, A2, and A3 be attributes in a relation R. If both of these functional dependencies hold: A1 → A2 and A2 → A3, then A1 → A3 holds, because of the_? rule.

It is possible to have both a primary key and a candidate key for the same attribute.

What is the difference between an object in an object oriented model and an entity in an entity relationship model?

Calculate the following transitive closures

6. In Dynamic Programming, the most important issues are defining subproblems and identifying recurrence relations. The most important issues in Dynamic Programming are defining subproblems and identifying recurrence relations. When a problem arises Describe your view of these problems as they arise.

Swing Jazz Club ERD Problem Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information.   Remember the ERD will eventually turn into the design for a database from a top down view.  Make sure you resolve any many to many conflicts.  Label an identifier or primary key and all pertinent attributes given.   If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity.  Therefore, all entities should end up with at least an identifier and another attribute that makes sense.  You may use any of the approaches shown by the book, though the ER-Model and Crow’s foot are the most common.  Make sure you show entities, relationships, cardinality, and optionality.  Swing Jazz Club The Swing Jazz Club teaches swing and jazz dancing and offers both private and group lessons.  Swing Jazz charges $60 dollars per hour for a private lesson and $10 dollars per hour for a group lesson.…

An aggregation relationship in the domain model suggests the application of the   Question options:   creator pattern   singleton pattern   controller pattern   expert pattern