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Oracle Exam key concepts related to refreshing the database and business areas

The structure of the DEPT table is as follows:
NAME NULL TYPE
Deptno Not Null NUMBER(2)
Dname VARCHAR2(14)
Loc VARCHAR2(13)
Examine the code
Declare
Type dept_record_type is record
(dno NUMBER, name VARCHAR2(20));
dept_rec dept_record_type;
Begin Select deptno, dname
INTO dept_rec
WHERE deptno=10;
FROM dept
END

Which statement displays the name of selected department?

A. DBMS_OUTPUT.PUT_LINE (name);
B. DBMS_OUTPUT.PUT_LINE (dname);
C. DBMS_OUTPUT.PUT_LINE (dept_rec.name);
D. DBMS_OUTPUT.PUT_LINE (dept_rec.dname);
E. DBMS_OUTPUT.PUT_LINE (dept_rec (name));

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Answer: C

Explanation:
Answer C is correct because it shows field NAME for record DEPT_REC of
DEPT_RECORD type.
Incorrect Answers:
A: Statement does not specify that NAME is field of DEPT_REC record.
B: DNAME is name of column in DEPT table and cannot be used this way to show data.
D: There is not field DNAME in record DEPT_REC.
Not E: This statement just has wrong syntax of function PUT_LINE in
DBMS_OUTPUT package to represent data.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 211-213
Chapter 5: Introducing PL/SQL