1D0-541 bundle（31 to 40） for IT candidates: Feb 2021 Edition
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Q31. What is the highest normal form of the relation(s) shown in the exhibit?
What is the highest normal form of the relation(s) shown in the exhibit?
A. Boyce-Codd normal form
B. First normal form
C. Second normal form
D. Third normal form
Q32. To create a view, what are the minimal privileges that a user must have for the relations used to make the view?
D. CREATE VIEW
Q33. The creation of intermediate entities occurs during the logical database design phase for an enterprise. It is used to resolve which types of relationships?
A. One-to-many and recursive
B. Complex, recursive, and many-to-many
C. Redundant, recursive, and one-to-many
D. One-to-many and one-to-one
Q34. Which characteristic is an advantage of a database management system?
A. Data files are owned and maintained by the users.
B. Database administration is simplified.
C. A standard method can be used to access the database.
D. Data is decentralized.
Q35. Which term best defines a database system in which data records are stored in one or more files with no structured relationship?
A. Flat-file database
B. Relational database
C. Distributed database
D. Object-oriented database
Q36. Consider the Information Engineering diagram shown in the exhibit. Building_ID, R_ID, Room_Count and Room_Num are integer numbers, whereas Bldg_Name and Res_Name are represented by variable-length strings with a maximum of 20 characters. Location can be up to 50 characters long, and no building has more than 600 rooms. Which SQL statement best implements the BUILDING relation shown in this diagram?
Building_ID NOT NULL PRIMARY KEY, Bldg_Name, Location, Room_Count);
B. CREATETABLE BUILDING ( Building_ID NOT NULL PRIMARY KEY, Bldg_Name, Location, Room_Count, FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID));
C. CREATETABLE BUILDING (Building_ID INTEGER NOT NULL PRIMARY KEY, Bldg_Name VARCHAR (20), Location VARCHAR (50),
D. CREATETABLE BUILDING (Building_ID INTEGER NOT NULL PRIMARY KEY, Bldg_Name VARCHAR (20), Location VARCHAR (50),
Room_Count INTEGER CHECK (Room_Count >
Room_Count INTEGER CHECK (
-1 And Room_Count < 601));
Room_Count > -1 Or Room_Count < 601));
Q37. Consider the Dept1_Parts and Dept2_Parts relations shown in the exhibit. Which of the following SQL statements would create a set difference of the two relations with the widest variety of Structured Query Language dialects?
A. SELECT * FROM Dept1_Parts EXCEPT(SELECT PartJD FROM Dept2_Parts);
B. SELECT * FROM Dept1_Parts MINUS (SELECT Part_ID FROM Dept2_Parts);
C. SELECT * FROM Dept1_Parts DIFFERENCE (SELECT Part_ID FROM Dept2_Parts);
D. SELECT * FROM Dept1_Parts WHERE Part_ID NOT IN (SELECT Part_ID FROM Dept2_Parts);
Q38. 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?
Q39. Which statement best describes a procedural data manipulation language command?
A. It contains a query language for retrieving data.
B. It can be used only to manipulate data through a SQL interface.
C. The user is not required to know how the underlying data structures are implemented.
D. It requires that the user know how the underlying data structures are implemented.
Q40. Which statement best describes a candidate key?
A. It is the primary key for an entity.
B. It uniquely identifies every instance of an entity.
C. One or more keys are joined together to form a composite key.
D. One or more keys may be used to form a primary key.