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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Controlling User Access	5%	- Differentiate system privileges from object privileges - Grant privileges on tables and on a view - Distinguish between granting privileges and roles
Reporting Aggregated Data Using Group Functions	15%	- Include or exclude grouped rows by using the HAVING clause - Identify the available group functions - Describe the use of group functions - Group data by using the GROUP BY clause
Creating Other Schema Objects	10%	- Create, maintain, and use sequences - Create synonyms for database objects - Create and maintain indexes - Create, modify, and retrieve data from a view
Using Set Operators	5%	- Use a set operator to combine multiple queries into a single query - Describe the order of precedence when the set operators are used - Describe set operators
Retrieving Data Using the SQL SELECT Statement	5%	- Execute a basic SELECT statement - List the capabilities of SQL SELECT statements - Differentiate between SQL statements and SQL*Plus commands
Using Single-Row Functions to Customize Output	10%	- Describe the differences between single-row and multiple-row functions - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Manipulate dates with the date functions - Perform arithmetic with date data
Using Subqueries to Solve Queries	15%	- Describe the types of problems that subqueries can solve - List the types of subqueries - Define subqueries - Write single-row and multi-row subqueries
Displaying Data from Multiple Tables Using Joins	15%	- Cross join tables - View data that does not meet a join condition by using outer joins - Join a table to itself by using a self-join - Write SELECT statements to access data from more than one table using equijoins and non-equijoins
Using DDL Statements to Create and Manage Tables	14%	- Drop, rename, and truncate tables - Describe the data types that are available for columns - Categorize the main database objects - Review the table structure - Alter table definitions - Create a simple table
Working with Oracle Database SQL	8%	- Start up and shut down a database - Create a container database - Describe the Oracle Database architecture - Explain the installation of Oracle Database software
Manipulating Data	14%	- Delete rows from a table - Insert rows into a table - Control transactions - Describe each data manipulation language (DML) statement - Update rows in a table
Restricting and Sorting Data	6%	- Limit the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands
Using Conversion Functions and Conditional Expressions	10%	- Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Use conditional IF THEN ELSE logic in a SELECT statement - Apply the NVL, NULLIF, and COALESCE functions to data - Describe implicit and explicit data type conversion

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Oracle Database SQL Sample Questions (Q386-Q391):

NEW QUESTION # 386
Which three are true about privileges and roles?

A. A role is owned by the user who created it.
B. A user has all object privileges for every object in their schema by default.
C. System privileges always set privileges for an entire database.
D. PUBLIC acts as a default role granted to every user in a database.
E. PUBLICcan be revoked from a user.
F. All roles are owned by the SYS schema.
G. A role can contain a combination of several privileges and roles.

Answer: B,D,G

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/network.102/b14266/authoriz.htm#i1010570

NEW QUESTION # 387
Which two are true?

A. CONCAT joins two character strings together.
B. FLOOR returns the largest integer less than or equal to a specified number.
C. INSTR finds the offset within a character string, starting from position 0.
D. CONCAT joins two or more character strings together.
E. INSTR finds the offset within a string of a single character only.
F. FLOOR returns the largest positive integer less than or equal to a specified number.

Answer: A,B

NEW QUESTION # 388
Evaluate the following query:

What would be the outcome of the above query?

A. It produces an error because flower braces have been used.
B. It produces an error because the data types are not matching.
C. It executes successfully and displays the literal " {'s start date was \> " for each row in the output.
D. It executes successfully and introduces an 's at the end of each promo_name in the output.

Answer: D

NEW QUESTION # 389
Which three statements are true about sequences in a single instance Oracle database?

A. Two or more tables cannot have keys generated from the same sequence.
B. A sequence can issue duplicate values.
C. A sequence can only be dropped by a DBA.
D. A sequence's unallocated cached values are lost if the instance shuts down.
E. A sequence number that was allocated can be rolled back if a transaction fails.
F. Sequences can always have gaps.

Answer: D,E,F

Explanation:
Sequences are database objects used to generate unique numeric identifiers. Here's the correct understanding of sequences in Oracle:
* A: Correct. Cached sequence values that are not yet used are lost if the database instance shuts down, as the cache is held in memory.
* B: Incorrect. The same sequence can be used to generate keys for more than one table. There is no such limitation.
* C: Correct. If a transaction using a sequence number is rolled back, the sequence number that was used or allocated is not reused.
* D: Incorrect. By their nature and configuration, sequences are designed to avoid issuing duplicate values unless explicitly designed to cycle.
* E: Correct. Sequences may have gaps, which can occur due to caching, sequence increment settings, or if a transaction using a sequence number is rolled back.
* F: Incorrect. A sequence can be dropped by any user with adequate privileges, not just a DBA.

NEW QUESTION # 390
Which statement adds a column called SALARYto the EMPLOYEEStable having 100 rows, which cannot contain null?
ALTER TABLE EMPLOYEES

A. ADD SALARY NUMBER(8,2) NOT NULL;
B. ADD SALARY NUMBER(8,2) DEFAULT 0 NOT NULL;
ALTER TABLE EMPLOYEES
C. ADD SALARY NUMBER(8,2) DEFAULT NOT NULL;
ALTER TABLE EMPLOYEES
D. ADD SALARY NUMBER(8,2) DEFAULT CONSTRAINT p_nn NOT NULL;
ALTER TABLE EMPLOYEES

Answer: B

NEW QUESTION # 391
......

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