1z1-071 Online Textbook

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Oracle 1z1-071 Exam Syllabus Topics:

Section	Objectives
Topic 1: Relational Database Concepts	- Tables, rows, columns, and relational model basics - Data types and database objects overview
Topic 2: SQL Functions	- Conversion and conditional functions 1. TO_CHAR, TO_NUMBER, CASE expressions - Single-row functions 1. Character, numeric, date functions
Topic 3: Subqueries and Advanced SQL	- Correlated subqueries and nested queries - Single-row and multi-row subqueries
Topic 4: SQL Retrieval	- Joins and set operations 1. UNION, INTERSECT, MINUS 2. INNER, OUTER, CROSS joins - SELECT statements and filtering data 1. ORDER BY and row limiting 2. WHERE clause and conditions
Topic 5: Data Manipulation and Schema Objects	- DML operations 1. INSERT, UPDATE, DELETE, MERGE - DDL operations 1. CREATE, ALTER, DROP tables and constraints

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Oracle Database SQL Sample Questions (Q66-Q71):

NEW QUESTION # 66
Which is true about the ROUND, TRUNC and MOD functions?

A. ROUND(MOD(25,3),-1) and TRUNC(MOD(25,3),-1) are both valid and give the same result.
B. TRUNC(MOD(25,3),-1) is invalid.
C. ROUND(MOD(25,3),-1) is invalid.
D. ROUND(MOD(25,3),-1) and TRUNC(MOD(25,3),-1) are both valid but give different results.

Answer: C

NEW QUESTION # 67
Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database?

A. The CURRENT_TIMESTAMP function returns data without time zone information.
B. The SESSIONTIMEZONE function can return an offset from Universal Coordinated Time (UTC).
C. The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC).
D. A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row.
E. A TIMESTAMP data type column contains information about year, month, and day.

Answer: A,B,C

NEW QUESTION # 68
Which three statements are true reading subqueries? (Choose three.)

A. Multiple columns or expressions can be compared between the subquery and main query.
B. A Main query can have many subqueries.
C. A subquery can have more than one main query.
D. The subquery and main query can retrieve data from different tables.
E. The subquery and main query must retrieve date from the same table.
F. Only one column or expression can be compared between the subquery and main query.

Answer: A,B,D

Explanation:
Explanation/Reference:

NEW QUESTION # 69
Examine the data in the CUST_NAMEcolumn of the CUSTOMERStable.

You want to extract only those customer names that have three names and display the * symbol in place of the first name as follows:

Which two queries give the required output? (Choose two.)

A. SELECT LPAD(SUBSTR(cust_name, INSTR(cust_name, ' ')),LENGTH(cust_name),'*') "CUST NAME" FROM customers WHERE INSTR(cust_name, ' ',-1,2)<>0;
B. SELECT LPAD(SUBSTR(cust_name, INSTR (cust_name ' ')),LENGTH(cust_name) - INSTR(cust_name, '
'), '*') "CUST NAME"
FROM customers
WHERE INSTR(cust_name, ' ',1,2)<>0;
C. SELECT LPAD(SUBSTR(cust_name, INSTR(cust_name, ' ')),LENGTH(cust_name),'*') "CUST NAME" FROM customers WHERE INSTR(cust_name, ' ',1,2)<>0;
D. SELECT LPAD(SUBSTR(cust_name, INSTR (cust_name ' ')),LENGTH(cust_name) - INSTR(cust_name, '
'), '*') "CUST NAME"
FROM customers
WHERE INSTR(cust_name, ' ',1,-2)<>0;

Answer: A,C

NEW QUESTION # 70
Examine the structure proposed for the TRANSACTIONS table:

Which two statements are true regarding the creation and storage of data in the above table structure? (Choose two.)

A. The CUST_CREDIT_LIMIT column would be able to store decimal values.
B. The TRANS_VALIDITY column would give an error.
C. The CUST_STATUS column would store exactly one character.
D. The TRANS_DATE column would be able to store day, month, century, year, hour, minutes, seconds, and fractions of seconds.
E. The CUST_STATUS column would give an error.
F. The TRANS_VALIDITY column would have a maximum size of one character.

Answer: B,C

NEW QUESTION # 71
......

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