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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Conversion Functions and Conditional Expressions	10%	- NVL, NULLIF, COALESCE and CASE expressions - TO_CHAR, TO_NUMBER, TO_DATE functions - Implicit and explicit data type conversion
Topic 2: Using Single-Row Functions to Customize Output	20%	- Character, number, and date functions - Nested functions usage
Topic 3: Displaying Data from Multiple Tables	15%	- Cartesian products - Equijoins and non-equijoins - Self-joins and outer joins
Topic 4: Retrieving Data Using SQL SELECT Statement	20%	- Column aliases, concatenation, literals and DISTINCT - Arithmetic operations and NULL handling - SELECT statement syntax and usage
Topic 5: Managing Tables and Constraints		- Data types, creating/altering/dropping tables - Constraints: primary key, foreign key, unique, check, not null - Temporary and external tables
Topic 6: Working with Time Zones and Date/Time Data		- TIMESTAMP, INTERVAL data types - Time zone conversion functions
Topic 7: Restricting and Sorting Data	15%	- WHERE clause and filtering conditions - ORDER BY clause and sorting rules - Substitution variables, DEFINE and VERIFY commands - Operator precedence
Topic 8: Aggregating Data Using Group Functions	10%	- Handling NULLs in group functions - SUM, AVG, COUNT, MAX, MIN functions - GROUP BY and HAVING clauses
Topic 9: Manipulating Data and Managing Transactions		- INSERT, UPDATE, DELETE, MERGE statements - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - Multi-table inserts
Topic 10: Using SET Operators		- UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations
Topic 11: Using Data Dictionary Views		- Retrieve metadata and object information
Topic 12: Controlling User Access		- Roles, granting and revoking privileges - System and object privileges
Topic 13: Managing Views		- Create, modify and drop views - Updatable and read-only views
Topic 14: Managing Indexes, Synonyms and Sequences		- Create and use synonyms - Create and use sequences - Create and maintain indexes
Topic 15: Using Subqueries to Solve Queries		- Single-row and multi-row subqueries - Correlated subqueries for update/delete
Topic 16: Relational Database Concepts	10%	- Theoretical and physical aspects of relational databases - ERD and SQL statement mapping - Relationship between database and SQL

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1z0-071 Übungsmaterialien & 1z0-071 Zertifikatsfragen

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Oracle Database SQL 1z0-071 Prüfungsfragen mit Lösungen (Q208-Q213):

208. Frage
You issue the following command to drop the PRODUCTS table:
SQL>DROP TABLE products;
What is the implication of this command? (Choose all that apply.)

A. All data in the table are deleted but the table structure will remain
B. All viewsand synonyms will remain but they are invalidated
C. All data along with the table structure is deleted
D. All indexes on the table will remain but they are invalidated
E. The pending transaction in the session is committed

Antwort: B,C,E

209. Frage
Which two statements are true regarding single row functions? (Choose two.)

A. TRUNC : can be used with NUMBER and DATE values.
B. CONCAT : can be used to combine any number of values.
C. SYSDATE : returns the database server current date and time.
D. INSTR : can be used to find only the first occurrence of a character in a string.
E. TRIM : can be used to remove all the occurrences of a character from a string.
F. MOD : returns the quotient of a division.

Antwort: A,C

Begründung:
Explanation

210. Frage
Which two statements are true regarding operators used with subqueries (Choose two.)

A. The INoperator cannot be used in single-row subqueries.
B. The NOToperator can be used with IN, ANYand ALLoperators.
C. The <ANYoperator means less than the maximum.
D. The NOT INoperator is equivalent to IS NULL.
E. =ANYand =ALLoperators have the same functionality.

Antwort: B,C

211. Frage
Examine the structure of the CUSTOMERS table: (Choose two.)

CUSTNO is the PRIMARY KEY.
You must determine if any customers' details have been entered more than once using a different CUSTNO, by listing all duplicate names.
Which two methods can you use to get the required result?

A. Right outer-join with self-join
B. Subquery
C. Left outer-join with self-join
D. Full outer-join with self-join
E. Self-join

Antwort: B,E

212. Frage
Examine the business rule:
Each student can work on multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true in this scenario? (Choose two.)

A. An associative table must be created with a composite key of STUDENT_ID and PROJECT_ID, which is the foreign key linked to the STUDENTS and PROJECTS entities.
B. STUDENT_IDmust be the primary key in the STUDENTSentity and foreign key in the PROJECTSentity.
C. The ERD must have a 1:M relationship between the STUDENTSand PROJECTSentities.
D. PROJECT_IDmust be the primary key in the PROJECTSentity and foreign key in the STUDENTSentity.
E. The ERD must have a M:M relationship between the STUDENTSand PROJECTSentities that must be resolved into 1:M relationships.

Antwort: A,E

Begründung:
Explanation/Reference:
References:
http://www.oracle.com/technetwork/issue-archive/2011/11-nov/o61sql-512018.html

213. Frage
......

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