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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q384-Q389):

NEW QUESTION # 384
Which two are true about external tables that use the ORACLE_DATAPUMP access driver?
(Choose two.)

A. When creating an external table, data can be selected only from a table whose rows are stored in database blocks.
B. Creating an external table creates a dump file that can be used only by an external table in the same database.
C. Creating an external table creates a directory object.
D. Creating an external table creates a dump file that can be used by an external table in the same or a different database.
E. When creating an external table, data can be selected from another external table or from a table whose rows are stored in database blocks.

Answer: D,E

NEW QUESTION # 385
Examine this query:
SELECT 2
FROM DUAL D1
CROSS JOIN DUA d2
CROSSS JOIN DUAL D3
WHERE 2 =3;
What is the result?

A. 1 row
B. No rows
C. 8 row
D. An error
E. 3 rows
F. 6 rows

Answer: B

NEW QUESTION # 386
Which two statements are true about sequences created in a single instance database? (Choose two.)

A. DELETE <sequencename> would remove a sequence from the database.
B. When a database instance shuts down abnormally, the sequence numbers that have been cached but not used would be available once again when the database instance is restarted.
C. When the MAXVALUE limit for the sequence is reached, you can increase the MAXVALUE limit by using the ALTER SEQUENCE statement.
D. The numbers generated by a sequence can be used only for one table.
E. CURRVAL is used to refer to the last sequence number that has been generated.

Answer: C,E

Explanation:
Explanation
References:
http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_2012.htm#SQLRF00817
https://docs.oracle.com/cd/A84870_01/doc/server.816/a76989/ch26.htm

NEW QUESTION # 387
Which statements are true? (Choose all that apply.)

A. Views with the same name but different prefixes, such as DBA, ALL and USER, use the same base tables from the data dictionary
B. The usernames of all the users including the database administrators are stored in the data dictionary.
C. Both USER_OBJECTS and CAT views provide the same information about all the objects that are owned by the user.
D. The data dictionary views can consist of joins of dictionary base tables and user-defined tables.
E. The USER_CONS_COLUMNS view should be queried to find the names of the columns to which a constraint applies.
F. The data dictionary is created and maintained by the database administrator.

Answer: A,B,E

NEW QUESTION # 388
Which statement is true about transactions?

A. A set of Data Manipulation Language (DML) statements executed in a sequence ending with a SAVEPOINT forms a single transaction.
B. Each Data Definition Language (DDL) statement executed forms a single transaction.
C. A set of DDL statements executed in a sequence ending with a COMMIT forms a single transaction.
D. A combination of DDL and DML statements executed in a sequence ending with a COMMIT forms a single transaction.

Answer: B

Explanation:
Explanation
References:
https://docs.oracle.com/database/121/CNCPT/transact.htm#CNCPT038

NEW QUESTION # 389
......

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