It is impossible to pass CIW 1D0-541 exam without any help in the short term. Come to Pass4sure soon and find the most advanced, correct and guaranteed CIW 1D0-541 practice questions. You will get a surprising result by our Renovate CIW v5 Database Design Specialist practice guides.
Q65. Consider the following relational algebraic expression as well as the Dept1_Parta and Dept2_Parts relations shown in the exhibit: Which of the following relations would result form the given relational algebraic expression?
A. C
B. B
C. A
D. D
Answer: A
Q66. Which pair of relational algebraic operations requires union compatibility?
A. Union and join
B. Selection and projection
C. Intersection and difference
D. Cartesian product and intersection
Answer: C
Q67. Which term describes the management of simultaneous transactions to prevent conflicts?
A. Parallelism
B. Serialization
C. Database control
D. Concurrency control
Answer: D
Q68. Consider the relation shown in the exhibit. Which of the following SQL statements would properly remove all tuples for New York customers?
WHERE Sales_Office = New York;
B. DELETE FROM Customers WHERESales_Office = ew York?WHERE Sales_Office = ?ew York?
C. DELETE * FROM Customers WHERESales_Office = ew York?WHERE Sales_Office = ?ew York?
D. DELETE FROM Customers WHERESales_Office NOT LIKE ew York? WHERE Sales_Office NOT LIKE ?ew York?
Answer: B
Q69. What is a virtual table?
A. A virtual table is a relation created as the result of data manipulation; it exists only in computer memory, and is not a permanent part of the database.
B. A virtual table is a relation stored in the database; it is used when multiple users access the same relation in a database.
C. A virtual table is a relation derived from the database data dictionary; it contains metadata about a base relation. A virtual table is a relation derived from the database?data dictionary; it contains metadata about a base relation.
D. A virtual table is a relation that consists of primary and foreign keys for a particular set of relations in a database.
Answer: A
Q70. Consider the Dept1_Parts and Dept2_Parts relations shown in the exhibit. Which of the following SQL statements would create an intersection of the two relations with the widest variety of Structured Query Language dialects?
A. SELECT *
FROM Dept1_Parts
AND
(SELECT *
FROM Dept2_Parts);
B. SELECT *
FROM Dept1_Parts
INTERSECTION
(SELECT *
FROM Dept2_Parts);
C. SELECT *
FROM Dept1_Parts
WHERE Dept1_Parts.Part_ID = Dept2_Parts.Part_ID;
D. SELECT *
FROM Dept1_Parts
WHERE Dept1_Parts.Part_ID = Dept2_Parts.Part_ID;
Answer: D
Q71. Consider the following DBDL description of an entity: Teachers (teach_num: variable length character string length 10 NOT NULL teach_name: variable length character string length 10 NOT NULL) Primary Key: teach_num which integrity constraint is satisfied?
A. Entity integrity
B. Necessary data
C. Referential integrity
D. Referential foreign integrity
Answer: A
Q72. Consider the entity-relationship (ER) diagram shown in the exhibit. What do the characters at the ends of the connecting line indicate?
A. Degree of a relation
B. Cardinality of a relation
C. Primary key of a relation
D. Determinant of a relation
Answer: B