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Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
Working with Time Zones and Date/Time Data		- TIMESTAMP, INTERVAL data types - Time zone conversion functions
Using Subqueries to Solve Queries		- Single-row and multi-row subqueries - Correlated subqueries for update/delete
Aggregating Data Using Group Functions	10%	- GROUP BY and HAVING clauses - Handling NULLs in group functions - SUM, AVG, COUNT, MAX, MIN functions
Using Data Dictionary Views		- Retrieve metadata and object information
Using SET Operators		- Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators
Displaying Data from Multiple Tables	15%	- Self-joins and outer joins - Equijoins and non-equijoins - Cartesian products
Retrieving Data Using SQL SELECT Statement	20%	- Column aliases, concatenation, literals and DISTINCT - SELECT statement syntax and usage - Arithmetic operations and NULL handling
Controlling User Access		- Roles, granting and revoking privileges - System and object privileges
Conversion Functions and Conditional Expressions	10%	- NVL, NULLIF, COALESCE and CASE expressions - Implicit and explicit data type conversion - TO_CHAR, TO_NUMBER, TO_DATE functions
Managing Tables and Constraints		- Temporary and external tables - Constraints: primary key, foreign key, unique, check, not null - Data types, creating/altering/dropping tables
Restricting and Sorting Data	15%	- WHERE clause and filtering conditions - Operator precedence - ORDER BY clause and sorting rules - Substitution variables, DEFINE and VERIFY commands
Relational Database Concepts	10%	- ERD and SQL statement mapping - Relationship between database and SQL - Theoretical and physical aspects of relational databases
Using Single-Row Functions to Customize Output	20%	- Character, number, and date functions - Nested functions usage
Manipulating Data and Managing Transactions		- INSERT, UPDATE, DELETE, MERGE statements - Multi-table inserts - Transaction control: COMMIT, ROLLBACK, SAVEPOINT
Managing Views		- Create, modify and drop views - Updatable and read-only views
Managing Indexes, Synonyms and Sequences		- Create and maintain indexes - Create and use sequences - Create and use synonyms

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Oracle Database SQL Sample Questions (Q229-Q234):

NEW QUESTION # 229
Examine the structure of the PROGRAMS table:

Which two SQL statements would execute successfully? (Choose two.)

A. SELECT NVL(MONTHS_BETWEEN(start_date,end_date),'Ongoing')FROM programs;
B. SELECT TO_DATE(NVL(SYSDATE-END_DATE,SYSDATE))FROM programs;
C. SELECT NVL(TO_CHAR(MONTHS_BETWEEN(start-date,end_date)),'Ongoing')FROM programs;
D. SELECT NVL(ADD_MONTHS(END_DATE,1)SYSDATE)FROM programs;

Answer: B,C

NEW QUESTION # 230
An Oracle database server session has an uncommitted transaction in progress which updated 5000 rows
in a table.
In which three situations does the transact ion complete thereby committing the updates?

A. When a CREATE TABLE AS SELECT statement is executed unsuccessfully in the same session
B. When a DBA issues a successful SHUTDOWN TRANSACTIONAL statement and the user, then issues a COMMIT
C. When a COMMIT statement is issued by the same user from another session in the same database instance
D. When a CREATE INDEX statement is executed successfully in same session
E. When the session logs out is successfully
F. When a DBA issues a successful SHUTDOWN IMMEDIATE statement and the user then issues a COMMIT

Answer: B,D,E

NEW QUESTION # 231
The first DROP operation is performed on PRODUCTS table using the following command:
DROP TABLE products PURGE;
Then you performed the FLASHBACK operation by using the following command:
FLASHBACK TABLE products TO BEFORE DROP;
Which statement describes the outcome of the FLASHBACK command?

A. It recovers the table structure, data, and the indexes.
B. It recovers the table structure and data but not the related indexes.
C. It recovers only the table structure.
D. It is not possible to recover the table structure, data, or the related indexes.

Answer: D

Explanation:
Explanation
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_9003.htm

NEW QUESTION # 232
You must write a query that prompts users for column names and conditions every time it is executed. (Choose the best answer.) The user must be prompted only once for the table name.
Which statement achieves those objectives?

A. SELECT &col1, &col2 FROM &&tableWHERE &condition = &&cond
B. SELECT &col1, '&col2'FROM &tableWHERE &&condition = '&cond';
C. SELECT &col1, &col2 FROM "&table"WHERE &condition = &cond;
D. SELECT &col1, &col2 FROM &&tableWHERE &condition = &cond;

Answer: D

NEW QUESTION # 233
Evaluate these commands which execute successfully:

Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence?

A. If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS.
B. Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ.
C. Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO.
D. Sequence ORD_SEQ is guaranteed not to generate duplicate numbers.
E. Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times.

Answer: B,D

NEW QUESTION # 234
......

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