Exam Name: Oracle Database SQL
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Corresponding Certification: Oracle PL/SQL Developer Certified Associate
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Introduction to ORACLE 1Z0-071 Certification Exam
The Oracle certification program is a worldwide program and there is a network of many different types of certifications available from Oracle. The 1Z0-071 exam is the first exam in the SQL Practice certification track. This track is meant for people who plan to build their career in SQL administration and want to specialize in managing the RDBMS with Oracle Community Platform, Enterprise Edition.
ORACLE 1Z0-071 Certification Exam is a certification exam for Oracle Database Administration, DBA. Oracle Database Administration, DBA certification proves that applicants have the skills and detailed knowledge needed to manage a company database resources. It is an important credential in the IT industry as it shows competencies of job positions such as application developers, database administrators, and IT managers. This is an online test preloaded with multiple-choice questions which are all included in Oracle 1Z0-071 Dumps. You have to select actual and relevant answers. Prepare yourself for this exam Guide by practicing with this assessment of the top websites to prepare for the 1Z0-071 exam.
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Oracle 1z0-071 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
| Topic 2: Manipulating Data and Managing Transactions | - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - INSERT, UPDATE, DELETE, MERGE statements - Multi-table inserts | |
| Topic 3: Managing Indexes, Synonyms and Sequences | - Create and use synonyms - Create and maintain indexes - Create and use sequences | |
| Topic 4: Relational Database Concepts | 10% | - ERD and SQL statement mapping - Relationship between database and SQL - Theoretical and physical aspects of relational databases |
| Topic 5: Managing Views | - Create, modify and drop views - Updatable and read-only views | |
| Topic 6: Restricting and Sorting Data | 15% | - Substitution variables, DEFINE and VERIFY commands - Operator precedence - WHERE clause and filtering conditions - ORDER BY clause and sorting rules |
| Topic 7: Controlling User Access | - Roles, granting and revoking privileges - System and object privileges | |
| Topic 8: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 9: Using SET Operators | - Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators | |
| Topic 10: 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 11: Using Subqueries to Solve Queries | - Single-row and multi-row subqueries - Correlated subqueries for update/delete | |
| Topic 12: Displaying Data from Multiple Tables | 15% | - Self-joins and outer joins - Cartesian products - Equijoins and non-equijoins |
| Topic 13: Retrieving Data Using SQL SELECT Statement | 20% | - Arithmetic operations and NULL handling - SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT |
| Topic 14: Working with Time Zones and Date/Time Data | - Time zone conversion functions - TIMESTAMP, INTERVAL data types | |
| Topic 15: Managing Tables and Constraints | - Data types, creating/altering/dropping tables - Constraints: primary key, foreign key, unique, check, not null - Temporary and external tables | |
| Topic 16: Aggregating Data Using Group Functions | 10% | - SUM, AVG, COUNT, MAX, MIN functions - GROUP BY and HAVING clauses - Handling NULLs in group functions |
Oracle Database SQL Sample Questions:
Examine the data in the EMPtable:
You execute this query:
Why does an error occur?
- A. An alias name must always be specified in quotes.
- B. An alias name must not be used in a GROUP BY clause.
- C. An alias name must not contain space characters.
- D. An alias name must not be used in an ORDER BY clause.
Correct Answer: D 🗳️
In which three situations does a new transaction always start? (Choose three.)
- A. when issuing a DML statement after a DML statement failed in the same session
- B. when issuing a CREATE INDEX statement after a CREATE TABLE statement completed successfully in the same session
- C. when issuing a TRUNCATE statement after a SELECT statement was issued in the same session
- D. when issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session
- E. when issuing the first Data Manipulation Language (DML) statement after a COMMIT or ROLLBACK statement was issued in the same session
- F. when issuing a CREATE TABLE statement after a SELECT statement was issued in the same session
Correct Answer: A,D,E 🗳️
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View the exhibit and examine the structure of the PROMOTIONS table.
You have to generate a report that displays the promo name and start date for all promos that started after the last promo in the 'INTERNET' category.
Which query would give you the required output?
- A. SELECT promo_name, promo_begin_date FROM promotions
WHERE promo_begin_date IN (SELECT promo_begin_date
FROM promotions
WHERE promo_category= `INTERNET'); - B. SELECT promo_name, promo_begin_date FROM promotions
WHERE promo_begin_date> ALL (SELECT MAX (promo_begin_date) FROM promotions) AND promo_category= `INTERNET'; - C. SELECT promo_name, promo_begin_date FROM promotions
WHERE promo_begin_date> ANY (SELECT promo_begin_date
FROM promotions
WHERE promo_category= `INTERNET'); - D. SELECT promo_name, promo_begin_date FROM promotions
WHERE promo_begin_date > ALL (SELECT promo_begin_date
FROM promotions
WHERE promo_category = `INTERNET');
Correct Answer: D 🗳️
View the Exhibit and examine the structure of the CUSTOMERStable.
CUSTOMER_VUis a view based on CUSTOMERS_BR1 table which has the same structure as CUSTOMERStable.
CUSTOMERSneed to be updated to reflect the latest information about the customers.
What is the error in the following MERGEstatement?
- A. The WHERE clause cannot be used with INSERT.
- B. The INTO clause is misplaced in the command.
- C. The CUSTOMER_ID column cannot be updated.
- D. CUSTOMER_VU cannot be used as a data source.
Correct Answer: C 🗳️
Examine this SQL statement:
Which two are true? (Choose two.)
- A. The subquery is executed for every row in the EMPLOYEES table.
- B. The DELETE statement executes successfully even if the subquery selects multiple rows.
- C. The subquery is not a correlated subquery.
- D. The subquery is executed before the DELETE statement is executed.
- E. All existing rows in the EMPLOYEES table are deleted.
Correct Answer: A,D 🗳️
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