1D0-541 | The Up To The Minute Guide To 1D0-541 Exams
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NEW QUESTION 1
Using the Customer and Sales_Rep relations shown in the exhibit, you must datermine a relational algebraic expression that will result in the following relation:
Which of the following relational algebraic expressions would result in this relation?
- A. Customer X Sales_Rep
- B. (Sales_Rep.Sales_Rep_No = Customer.Sales_Rep_No (Sales_Rep X Customer))
- C. (Customer X Sales_Rep) ? Sales_Rep.Sales_Rep_No = Customer.Sales_Rep_No
- D. Customer.Sales_Rep_No = Sales.sales_Rep_No (Customer X Sales_Rep)
Answer: A
NEW QUESTION 2
To create a view, what are the minimal privileges that a user must have for the relations used to make the view?
- A. GRANT
- B. REVOKE
- C. SELECT
- D. CREATE VIEW
Answer: C
NEW QUESTION 3
What is the most important service provided by a database management system?
- A. Provides support for a data manipulation language
- B. Allows users to store data in a distributed data repository
- C. Provides support for data formatting language commands
- D. Translates procedural commands into non-procedural commands
Answer: A
NEW QUESTION 4
What is a data dictionary?
- A. A system catalog containing user data
- B. An area of the database that is directly accessible by the user
- C. Data that is stored in tables and is only accessible by the DBMS
- D. Metadata that is stored in tables and is only accessible by the DBMS
Answer: D
NEW QUESTION 5
Consider the Information Engineering diagram shown in the exhibit for a building management company. Referential integrity must be maintained such that a building cannot be deleted when it has residents. Building_ID, R_ID, Room_Count and Room_Num are integer numbers, whereas Bldg_Name, Location and Res_Name are all represented by variable-length strings with a maximum of 20 characters. Which SQL statement best implements the relations shown in this diagram?
- A. CREATE TABLE BUILDING (Building_ID INTEGER NOT NULL PRIMARY KEY,Bldg_Name VARCHAR (20),Location VARCHAR (20), Room_Count INTEGER ); CREATE TABLE RESIDENT ( R_ID NOT NULL PRIMARY KEY,Room_Num INTEGER, Res_Name VARCHAR (20), Building_ID INTEGER NOT NULL,FOREIGN KEY Building_ID REFERENCES RESIDENT (Building_ID) ON DELETE NO CHECK);
- B. CREATE TABLE BUILDING (Building_ID INTEGER NOT NULL PRIMARY KEY,Bldg_Name VARCHAR (20),Location VARCHAR (20), Room_Count INTEGER ); CREATE TABLE RESIDENT ( R_ID NOT NULL PRIMARY KEY,Room_Num INTEGER, Res_Name VARCHAR (20), Building_ID INTEGER NOT NULL,FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID) ON DELETE NO CHECKON UPDATE CASCADE);
- C. CREATE TABLE BUILDING (Building_ID INTEGER NOT NULL PRIMARY KEY,Bldg_Name VARCHAR (20),Location VARCHAR (20), Room_Count INTEGER ); CREATE TABLE RESIDENT ( R_ID NOT NULL PRIMARY KEY,Room_Num INTEGER, Res_Name VARCHAR (20), Building_ID INTEGER NOT NULL,FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID) ON DELETE NO CHECKON UPDATE CASCADE);
- D. CREATE TABLE BUILDING (Building_ID INTEGER NOT NULL PRIMARY KEY,Bldg_Name VARCHAR (20),Location VARCHAR (20), Room_Count INTEGER ); CREATE TABLE RESIDENT ( R_ID NOT NULL PRIMARY KEY,Room_Num INTEGER, Res_Name VARCHAR (20), Building_ID INTEGER NOT NULL,FOREIGN KEY Building_ID REFERENCES BUILDING (Building_ID) ON DELETE NO CHECKON UPDATE CASCADE);
Answer: C
NEW QUESTION 6
Which of the following best describes the ON DELETE NO ACTION referential integrity constraint?
- A. If a parent key is deleted, any child keys referenced by the parent key are automatically deleted.
- B. If a parent key is deleted, no test is made for referential integrity.
- C. If any child key references a parent key, the record containing the parent key cannot be deleted.
- D. If a parent key is deleted, all child keys are automatically set to a specified value.
Answer: C
NEW QUESTION 7
Consider the following relations shown in the exhibit. Which of the following SQL statements would return the Customers2 relation from the Customers relation?
- A. SELECT *FROM CustomersWHERE Satisfaction_Rate <= 80 OR Satisfaction_Rate >= 90;
- B. SELECT *FROM CustomersWHERE Satisfaction_Rate IN (80 AND 90);
- C. SELECT *FROM CustomersWHERE Satisfaction_Rate >= 80 AND Satisfaction_Rate <= 89;
- D. SELECT *FROM Customers WHERE Satisfaction_Rate BETWEEN (80, 90);
Answer: C
NEW QUESTION 8
A large enterprise uses a two-tier database architecture and runs complex database processing on the client. Which term best describes the client in this system?
- A. Fat client
- B. Thin client
- C. Terminal client
- D. Enterprise client
Answer: A
NEW QUESTION 9
Consider the following relations shown in the exhibit. Which of the following SQL statements would return the Customers2 relation from the Customers relation?
- A. SELECT *FROM CustomersWHERE Satisfaction_Rate <= 80 OR Satisfaction_Rate >= 90;
- B. SELECT *FROM CustomersWHERE Satisfaction_Rate IN (80 AND 90);
- C. SELECT *FROM CustomersWHERE Satisfaction_Rate >= 80 AND Satisfaction_Rate <= 89;
- D. SELECT *FROM Customers WHERE Satisfaction_Rate BETWEEN (80, 90);
Answer: C
NEW QUESTION 10
What is a virtual table?
- A. A virtual table is a relation created as the result of data manipulation, and is not a permanent part of the database.
- B. A virtual table is a relation stored in the databases memory; it is used when multiple users access the same relation in a database.
- C. A virtual table is a relation created from a defined base table; it contains metadata about the 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
NEW QUESTION 11
What is a domain?
- A. A normalized set of data applicable to a particular relation
- B. A combination of attributes for a relation
- C. A definition of permissible values for one or more attributes
- D. A set of permissible values for one or more relations
Answer: C
NEW QUESTION 12
Consider the Information Engineering diagram in the exhibit showing a conceptual data model of the relations BUILDING and RESIDENT. What is the next step in refining the data model?
- A. Create intermediate entities.
- B. Create a logical data model.
- C. Resolve many-to-many relationahips.
- D. Identify and resolve complex relationships.
Answer: B
NEW QUESTION 13
A foreign key maps to a:
- A. prime key.
- B. indirect key.
- C. parent key.
- D. composite key.
Answer: C
NEW QUESTION 14
Which database security technique prevents invalid data from being entered into the database?
- A. File locking
- B. User authorization
- C. Parity checks
- D. Integrity controls
Answer: D
NEW QUESTION 15
Which statement is used to define a named group of related tables, views, domains and other database objects?
- A. CREATE ENTITY
- B. CREATE INDEX
- C. CREATE DOMAIN
- D. CREATE SCHEMA
Answer: D
NEW QUESTION 16
Your enterprise must decide whether to use a database management system. Which of the following lists four advantages of using a DBMS?
- A. Management of data redundancy, increased data integrity, increased data dependence, and increased application complexity
- B. Consistency of data, adherence to standards, managed concurrency, and increased software complexity
- C. Increased data access, increased data backup and recovery, data sharing, and consistency of data
- D. Increased data security, increased data integrity, increased data independence, and decentralization of data
Answer: C
NEW QUESTION 17
Which subset of Structured Query Language (SQL) is used to create and name database entities?
- A. Data Control Language
- B. Database Entity Language
- C. Data Definition Language
- D. Data Manipulation Language
Answer: C
NEW QUESTION 18
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