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How to Prepare for Oracle 1z0-082: Oracle Database Administration 1 Exam
Preparation Guide for Oracle 1z0-082: Oracle Database Administration 1 Exam
Introduction
Oracle, based in California, is an American multinational Information Technology company. Oracle is an international company that develops software applications for business. To help enterprises develop their operations, Oracle provides a variety of cloud-based applications and systems as well as hardware and services. Data management, business analytics, IT operations management, enterprise resource planning, security, and emerging technologies are the focus of Oracle’s applications. Oracle is best known for its database software and technology. Oracle Database, a relational Database Management System (DBMS), is one of the most popular corporate database products.
Oracle also develops and builds tools and technologies for database management systems for middle-tier applications, Human Capital Management systems (HCM), Customer Relationship Management systems (CRM), Enterprise Resource Planning systems (ERP), and Supply Chain Management systems (SCM). Oracle Database commonly known as Oracle Database Management System (DBMS) is a multi-model database management system. It is a widely used database to run tasks for Data warehousing and Online Transaction processing databases. Different service providers make Oracle Database accessible on cloud, premises, or a hybrid cloud installation.
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NEW QUESTION 14
View the Exhibit and examine the structure of the PRODUCTS table.
Which two tasks require subqueries? (Choose two.)
- A. Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE
- B. Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and whose status is orderable
- C. Display the minimum PROD_LIST_PRICE for each product status
- D. Display suppliers whose PROD_LIST_PRICE is less than 1000
- E. Display the total number of products supplied by supplier 102 which have a product status of obsolete
Answer: A,B
NEW QUESTION 15
Which two statements are true about UNDO and REDO? (Choose two.)
- A. The generation of REDO generates UNDO
- B. DML modifies Oracle database objects and only generates UNDO
- C. DML modifies Oracle database objects and only generates REDO
- D. The generation of UNDO generates REDO
- E. DML modifies Oracle database objects and generates UNDO and REDO
Answer: A,D
NEW QUESTION 16
View the Exhibits and examine the structure of the COSTS and PROMOTIONS tables.
You want to display PROD_IDS whose promotion cost is less than the highest cost PROD_ID in a promotion time interval.
Examine this SQL statement:
Exhibit 1.
Exhibit 2.
What will be the result?
- A. It gives an error because the GROUP BY clause is not valid
- B. It executes successfully and gives the required result
- C. It executes successfully but does not give the required result
- D. It gives an error because the ALL keyword is not valid
Answer: B
NEW QUESTION 17
In one of your databases, user KING is:
1. Not a DBA user
2. An operating system (OS) user
Examine this command and its output:
What must you do so that KING is authenticated by the OS when connecting to the database instance?
- A. Grant DBA to KING
- B. Have the OS administrator add KING to the OSDBA group
- C. Set OS_AUTHENT_PREFIX to OPS$
- D. Unset REMOTE_LOGIN_PASSWORDFILE
- E. Alter user KING to be IDENTIFIED EXTERNALLY
Answer: C
Explanation:
https://oracle-base.com/articles/misc/os-authentication
NEW QUESTION 18
You execute this query:
SELECT TO_CHAR(NEXT_DAY(LAST_DAY(SYSDATE), `MON'), `dd "Monday for"
fmMonth rrrr')
What is the result?
- A. It returns the date for the first Monday of the next month
- B. It returns the date for the last Monday of the current month
- C. It executes successfully but does not return any result
- D. It generates an error
Answer: A
NEW QUESTION 19
Which two statements are true about the Automatic Diagnostic Repository (ADR)? (Choose two.)
- A. It supports diagnostics for Automatic Storage Management (ASM)
- B. The ADR base defaults to $ORACLE_HOME/dbs if the DIAGNOSTIC_DEST parameter and the ORACLE_BASE environment variable are not set
- C. It is held inside an Oracle database schema
- D. It supports diagnostics for Oracle Clusterware
- E. The ADR base defaults to $ORACLE_HOME/rdbms/admin if neither DIAGNOSTIC_DEST nor ORACLE_BASE is set
Answer: C,E
Explanation:
https://docs.oracle.com/cd/E11882_01/install.112/e27508/admin.htm
NEW QUESTION 20
Which two statements are true about the DUAL table? (Choose two.)
- A. It can be used to display only constants or pseudo columns
- B. It consists of a single row and single column of VARCHAR2 data type
- C. It can be accessed only by the SYS user
- D. It can display multiple rows and columns
- E. It can display multiple rows but only a single column
- F. It can be accessed by any user who has the SELECT privilege in any schema
Answer: B,C
NEW QUESTION 21
Examine the description of the CUSTOMERS table:
For customers whose income level has a value, you want to display the first name and due amount as 5% of their credit limit. Customers whose due amount is null should not be displayed.
Which query should be used?
- A. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level != NULL
AND cust_credit_level !=NULL; - B. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level != NULL
AND due_amount !=NULL; - C. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_incoms_level IS NOT NULL
AND due_amount IS NOT NULL; - D. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level <> NULL
AND due_amount <> NULL; - E. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT
FROM customers
WHERE cust_income_level IS NOT NULL
AND cust_credit_limit IS NOT NULL;
Answer: E
NEW QUESTION 22
View the Exhibits and examine the structure of the COSTS and PROMOTIONS tables.
You want to display PROD_IDS whose promotion cost is less than the highest cost PROD_ID in a promotion time interval.
Examine this SQL statement:
Exhibit 1.
Exhibit 2.
What will be the result?
- A. It gives an error because the GROUP BY clause is not valid
- B. It executes successfully and gives the required result
- C. It executes successfully but does not give the required result
- D. It gives an error because the ALL keyword is not valid
Answer: B
NEW QUESTION 23
Which three statements are true about dropping and unused columns in an Oracle database? (Choose three.)
- A. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
- B. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
- C. Partition key columns cannot be dropped.
- D. A DROP COLUMN command can be rolled back
- E. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
- F. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
Answer: B,E,F
NEW QUESTION 24
Examine this command and some partial output:
Why does the DB01.abc.com service show unknown status?
- A. The service DB01.abc.com is statically registered
- B. The service DB01.abc.com is dynamically registered
- C. The SID_LIST_LISTENER section is not contained in the LISTENER.ORA file
- D. The LOCAL_LISTENER database parameter is not set to a service name that refers to LISTENER_1
- E. The listener is not listening on the default port 1521
Answer: D
NEW QUESTION 25
Which two statements are true about the SET VERIFY ON command? (Choose two.)
- A. It displays values for variables prefixed with &&
- B. It displays values for variables used only in the WHERE clause of a query
- C. It can be used only in SQL*Plus
- D. It can be used in SQL Developer and SQL*Plus
- E. It displays values for variables created by the DEFINE command
Answer: C,E
NEW QUESTION 26
Which two are true about shrinking a segment online? (Choose two.)
- A. To shrink a table it must have row movement enabled
- B. It always eliminates all migrated rows if any exist in the table
- C. To shrink a table it must have a UNIQUE KEY constraint
- D. It is not possible to shrink either indexes or Index Organized Tables (IOTs)
- E. To shrink a table it must have a PRIMARY KEY constraint
- F. It must be in a tablespace that uses Automatic Segment Space Management (ASSM)
Answer: A,E
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_3001.htm
NEW QUESTION 27
Which three failures require intervention for recovery? (Choose three.)
- A. statement failure
- B. a user error such as dropping the wrong table
- C. media failure
- D. network interface card (NIC) failure
- E. user process failure
Answer: B,C,E
NEW QUESTION 28
The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE.
NLS_DATE_FORMAT is set to DD-MON-RR.
Which two are true about data type conversions involving these columns in query expressions? (Choose two.)
- A. invoie_date > '01-02-2019' : uses implicit conversion
- B. qty_sold = '0554982' uses implicit conversion
- C. CONCAT (qty_sold, invoice_date) : requires explicit conversion
- D. invoice_date = '15-march-2019' : uses implicit conversion
- E. qty_sold BETWEEN '101' AND '110' : uses implicit conversion
Answer: D,E
NEW QUESTION 29
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