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The Oracle 1z1-071 exam covers a range of topics such as SQL SELECT statements, data manipulation, data control language, data definition language, and transaction control statements. Candidates are required to have a good understanding of SQL syntax, database objects, data modeling, and normalization concepts. 1z1-071 exam also tests the candidate's ability to write efficient and optimized SQL queries that can retrieve and manipulate data from the Oracle database. Candidates who pass the exam can demonstrate their ability to design, implement and manage Oracle databases, which can help them advance their careers in the field of database management.

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Minimum age requirement for the exam 1Z0-071 is 18 years old
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Oracle 1z0-071 (Oracle Database SQL) certification exam is an excellent choice for IT professionals who want to improve their skills in SQL programming and database management. Oracle Database SQL certification exam covers a range of topics related to SQL programming and database management and is suitable for both experienced professionals and entry-level candidates. Passing 1z1-071 Exam can help candidates gain credibility and stand out in a competitive job market.

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Oracle Database SQL Sample Questions (Q274-Q279):

NEW QUESTION # 274
Examine the business rule:
Each student can take up multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true in this scenario?

A. PROJECT_IDmust be the primary key in the PROJECTSentity and foreign key in the STUDENTSentity.
B. STUDENT_IDmust be the primary key in the STUDENTSentity and foreign key in the PROJECTSentity.
C. An associative table must be created with a composite key of STUDENT_ID and PROJECT_ID, which is the foreign key linked to the STUDENTS and PROJECTS entities.
D. The ERD must have a M:M relationship between the STUDENTSand PROJECTSentities that must be resolved into 1:M relationships.
E. The ERD must have a 1:M relationship between the STUDENTSand PROJECTSentities.

Answer: C,D

Explanation:
Explanation/Reference:
References:
http://www.oracle.com/technetwork/issue-archive/2011/11-nov/o61sql-512018.html

NEW QUESTION # 275
Examine this business rule:
Each student can work on multiple projects and each project can have multiple students. _ You must design an Entity Relationship (ER) model for optimal data storage and allow for generating reports in this format:
STUDEN_ID FIRST_NAMK LASTNAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true?

A. STUDENT_ID must be the primary key In the students entity and foreign key In the projects entity.
B. The ER must have a many-to-many relationship between the students and projects entitles tb.it must be resolved Into one-to-many relationships.
C. PORJECTI_ID must be the primary key In the projects entity and foreign key in the students The ER must have a one-to-many relationship between the students and projects entitles.
D. An associative table must be created with a composite key of student_id and project_id, which is the foreign key linked to the Stand projects entitles.

Answer: D

NEW QUESTION # 276
You must create a table EMPLOYEES in which the values in the columns EMPLOYEES_ID and LOGIN_ID must be unique and not null.
Which two SQL statements would create the required table? (Choose two.)

A. CREATE TABLE employees(employee_id NUMBER,login_id NUMBER,employee_name VARCHAR2(100),hire_date DATE,CONSTRAINT emp_id_uk UNIQUE (employee_id, login_id));
B. CREATE TABLE employees(employee_id NUMBER,login_id NUMBER,employee_name VARCHAR2(25),hire_date DATE,CONSTRAINT emp_id_pk PRIMARY KEY (employee_id, login_id));
C. CREATE TABLE employees(employee_id NUMBER,login_id NUMBER,employee_name VARCHAR2(100),hire_date DATE,CONSTRAINT emp_id_uk UNIQUE (employee_id, login_id);CONSTRAINT emp_id_nn NOT NULL (employee_id, login_id));
D. CREATE TABLE employees(employee_id NUMBER CONSTRAINT emp_id_pk PRIMARY KEY,login_id NUMBER UNIQUE,employee_name VARCHAR2(25),hire_date DATE);
E. CREATE TABLE employees(employee_id NUMBER CONSTRAINT emp_id_nn NOT NULL,login_id NUMBER CONSTRAINT login_id_nn NOT NULL,employee_name VARCHAR2(100),hire_date DATE,CONSTRAINT emp_num_id_uk UNIQUE (employee_id, login_id));

Answer: B,E

NEW QUESTION # 277
Which two statements are true about the ORDER BYclause when used with a SQL statement containing a SET operator such as UNION? (Choose two.)

A. Each SELECTstatement in the compound query can have its own ORDER BYclause.
B. Only column names from the first SELECTstatement in the compound query are recognized.
C. Column positions must be used in the ORDER BYclause.
D. Each SELECT statement in the compound query must have its own ORDER BYclause.
E. The first column in the first SELECTof the compound query with the UNIONoperator is used by default to sort output in the absence of an ORDER BYclause.

Answer: A,B

NEW QUESTION # 278
Which two statements are true regarding constraints?

A. Only the primary key can be defined at the column and table levels.
B. Both primary key and foreign key constraints can be defined at both column and table levels.
C. The foreign key and parent table primary key must have the same name.
D. A table can have only one primary key but multiple foreign keys.
E. A table can have only one primary key and one foreign key.

Answer: B,D

NEW QUESTION # 279
......

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Oracle Database SQL Sample Questions (Q274-Q279):

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