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

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Oracle Database SQL 1z1-071 Prüfungsfragen mit Lösungen (Q105-Q110):

105. Frage
Which two statements are true about single row functions?

A. CONCAT: can be used to combine any number of values
B. MOD: returns the quotient of a division operation
C. CEIL: can be used for positive and negative numbers
D. FLOOR: returns the smallest integer greater than or equal to a specified number
E. TRUNC: can be used with NUMBER and DATE values

Antwort: C,E

Begründung:
Single-row functions operate on single rows and return one result per row. Let's look at each option in the context of Oracle 12c SQL:
* A. CONCAT: This function can only combine two values at a time. If you need to concatenate more than two values, you have to nest CONCAT functions or use the || operator.
* B. MOD: The MOD function returns the remainder of a division operation, not the quotient.
* C. CEIL: This function returns the smallest integer that is greater than or equal to a specified number. It works with both positive and negative numbers.
* D. FLOOR: It returns the largest integer that is less than or equal to the specified number, not greater than or equal to.
* E. TRUNC: This function can indeed be used with both NUMBER and DATE values to truncate them to a specified number of decimal places or to a particular component of a date.
References:
* Oracle Database SQL Language Reference 12c Release 1 (12.1), Functions
* Oracle Database SQL Language Reference 12c Release 1 (12.1), CONCAT Function
* Oracle Database SQL Language Reference 12c Release 1 (12.1), MOD Function
* Oracle Database SQL Language Reference 12c Release 1 (12.1), CEIL and FLOOR Functions
* Oracle Database SQL Language Reference 12c Release 1 (12.1), TRUNC Function

106. Frage
In the customers table, the CUST_CITY column contains the value 'Paris' for the CUST_FIRST_NAME 'Abigail'.
Evaluate the following query:

What would be the outcome?

A. Abigail PA
B. An error message
C. Abigail Pa
D. Abigail IS

Antwort: C

107. Frage
Examine this incomplete query:
SELECT DATA'2019-01-01'+<INTERVAL CLAUSE>
FROM DUAL;
Which three clauses can replace<INTERVAL CLAUSE>ti add 22 hours to the date?

A. INTERVAL '12:00'
B. INTERVAL'11:60'HOUR TO MINUTE
C. INTERVAL'12' HOUR
D. INTERVAL'720'MINUTE
E. INTERVAL'0,5'DAY
F. INTERVAL'0 12'DAY TO HOUR

Antwort: B,C,D

Begründung:
In Oracle SQL, adding hours to a date can be done using the INTERVAL keyword with appropriate clauses:
* Option C: INTERVAL '12' HOUR
* Adds exactly 12 hours to a date.
* Option D: INTERVAL '720' MINUTE
* Since 720 minutes equal 12 hours, this correctly adds 12 hours to a date.
* Option F: INTERVAL '11:60' HOUR TO MINUTE
* This interval represents 11 hours and 60 minutes, which effectively adds up to 12 hours.
Options A, B, and E contain incorrect syntax or do not match the required addition of 22 hours as specified in the question.

108. Frage
Examine the description of the BRICKS table:

Examine the description of the BRICKS_STAGE table:

Which two queries execute successfully? (Choose two.)

Antwort: B,C

109. Frage
Examine the structure of the BOOKS_TRANSACTIONStable:

You want to display the member IDs, due date, and late fee as $2 for all transactions.
Which SQL statement must you execute?

A. SELECT member_id AS MEMBER_ID, due_date AS DUE_DATE, $2 AS LATE_FEE FROM BOOKS_TRANSACTIONS
B. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", $2 AS "LATE FEE" FROM BOOKS_TRANSACTIONS
C. SELECT member_id 'MEMBER ID', due_date 'DUE DATE', '$2 AS LATE FEE' FROM BOOKS_TRANSACTIONS;
D. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", '$2' AS "LATE FEE" FROM BOOKS_TRANSACTIONS

Antwort: D

110. Frage
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