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Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Using Set Operators	5%	- Describe set operators - Use a set operator to combine multiple queries into a single query - Describe the order of precedence when the set operators are used
Topic 2: Reporting Aggregated Data Using Group Functions	15%	- Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause - Identify the available group functions - Describe the use of group functions
Topic 3: Using Single-Row Functions to Customize Output	10%	- Manipulate dates with the date functions - Perform arithmetic with date data - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Manipulate strings with character function in the SELECT and WHERE clauses - Describe the differences between single-row and multiple-row functions
Topic 4: Displaying Data from Multiple Tables Using Joins	15%	- View data that does not meet a join condition by using outer joins - Cross join tables - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - Join a table to itself by using a self-join
Topic 5: Restricting and Sorting Data	6%	- Use ampersand substitution to restrict and sort output at runtime - Use DEFINE and UNDEFINE commands - Limit the rows that are retrieved by a query - Sort the rows that are retrieved by a query
Topic 6: Retrieving Data Using the SQL SELECT Statement	5%	- List the capabilities of SQL SELECT statements - Execute a basic SELECT statement - Differentiate between SQL statements and SQL*Plus commands
Topic 7: Creating Other Schema Objects	10%	- Create and maintain indexes - Create, modify, and retrieve data from a view - Create synonyms for database objects - Create, maintain, and use sequences
Topic 8: 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 - Describe implicit and explicit data type conversion - Apply the NVL, NULLIF, and COALESCE functions to data
Topic 9: Using DDL Statements to Create and Manage Tables	14%	- Create a simple table - Categorize the main database objects - Drop, rename, and truncate tables - Alter table definitions - Review the table structure - Describe the data types that are available for columns
Topic 10: Controlling User Access	5%	- Differentiate system privileges from object privileges - Grant privileges on tables and on a view - Distinguish between granting privileges and roles
Topic 11: Manipulating Data	14%	- Control transactions - Delete rows from a table - Insert rows into a table - Describe each data manipulation language (DML) statement - Update rows in a table
Topic 12: Using Subqueries to Solve Queries	15%	- List the types of subqueries - Describe the types of problems that subqueries can solve - Write single-row and multi-row subqueries - Define subqueries
Topic 13: Working with Oracle Database SQL	8%	- Start up and shut down a database - Explain the installation of Oracle Database software - Describe the Oracle Database architecture - Create a container database

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Oracle Database SQL 1z1-071 Prüfungsfragen mit Lösungen (Q170-Q175):

170. Frage
View the exhibit and examine the structure of the CUSTOMERStable.

Which two tasks would require subqueries or joins to be executed in a single statement?

A. finding the average credit limit of male customers residing in 'Tokyo'or 'Sydney'
B. listing of customers who do not have a credit limit and were born before 1980
C. listing of those customers, whose credit limit is the same as the credit limit of customers residing in the city
'Tokyo'.
D. finding the number of customers, in each city, whose credit limit is more than the average credit limit of all the customers
E. finding the number of customers, in each city, whose marital status is 'married'.

Antwort: C,D

171. Frage
Examine this SQL statement:

Which two are true?

A. The subquery is not a correlated subquery.
B. The UPDATE statement executes successfully even if the subquery selects multiple rows.
C. All existing rows in the ORDERS table are updated.
D. The subquery is executed for every updated row in the ORDERS table.
E. The subquery is executed before the UPDATE statement is executed.

Antwort: D,E

Begründung:
The provided SQL statement is an update statement that involves a subquery which is correlated to the main query.
* A. The subquery is executed before the UPDATE statement is executed. (Incorrect) This statement is not accurate in the context of correlated subqueries. A correlated subquery is one where the subquery depends on values from the outer query. In this case, the subquery is executed once for each row that is potentially updated by the outer UPDATE statement because it references a column from the outer query (o.customer_id).
* B. All existing rows in the ORDERS table are updated. (Incorrect)
Without a WHERE clause in the outer UPDATE statement, this would typically be true. However, the correctness of this statement depends on the actual data and presence of matching customer_id values in both tables. If there are rows in the ORDERS table with customer_id values that do not exist in the CUSTOMERS table, those rows will not be updated.
* C. The subquery is executed for every updated row in the ORDERS table. (Correct) Because the subquery is correlated (references o.customer_id from the outer query), it must be executed for each row to be updated in the ORDERS table to get the corresponding cust_last_name from the CUSTOMERS table.

172. Frage
Which statement adds a column called SALARY to the EMPLOYEES table having 100 rows, which cannot contain null?

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

Antwort: D

173. Frage
Which two partitioned table maintenance operations support asynchronous Global Index Maintenance in Oracle database 12c? (Choose two.)

A. ALTER TABLE TRUNCATE PARTITION
B. ALTER TABLE MERGE PARTITION
C. ALTER TABLE DROP PARTITION
D. ALTER TABLE ADD PARTITION
E. ALTER TABLE SPLIT PARTITION
F. ALTER TABLE MOVE PARTITION

Antwort: A,C

174. Frage
Examine the description of the EMPLOYEES table:

Examine these requirements:
1. Display the last name, date of hire and the number of years of service for each employee.
2. If the employee has been employed 5 or more years but less than 10, display "5+ years of service".
3. If the employee has been employed 10 or more years but less than 15, display "10+ years of service".
4. If the employee has been employed 15 or more years, display "15+ years of service".
5. If none of these conditions matches, display "<5 years of service".
6. Sort the results by the HIRE_DATE column.
Which statement satisfies all the requirements?

Antwort: A

175. Frage
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