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Oracle 1Z1-082 Exam Syllabus Topics:

Section	Objectives
Reporting Aggregated Data Using the Group Functions	- Use the HAVING clause to filter grouped data - Describe group functions (AVG, SUM, MIN, MAX, COUNT) - Use the GROUP BY clause to group data
Displaying Data from Multiple Tables Using Joins	- Use CROSS joins - Join a table to itself using self-join - Use Equijoins and Non-equijoins - Describe different types of joins and their features - Use OUTER joins (LEFT, RIGHT, FULL)
Retrieving Data using the SQL SELECT Statement	- Use SQL row functions (character, number, date, conversion, general) - Describe how schema objects work - Execute a basic SELECT statement - Use scalar and correlated subqueries - List the capabilities of SQL SELECT statements - Use the ORDER BY clause
Understanding Oracle Database Architecture - Database Storage Structures	- Describe tablespaces and data files - Create and manage tablespaces - Describe the logical and physical database structures - Manage space in tablespaces
Introduction to Oracle Database	- Describe Oracle Database Cloud Service (DBCS) architecture and features - Describe Oracle Database instance and memory structures - Explain Oracle Database server architecture - Describe Oracle Database architecture - Explain database storage structures (data blocks, segments, tablespaces, data files) - Describe Oracle processes (PMON, SMON, DBWn, LGWR, CKPT, others)
Using Single-Row Functions to Customize Output	- Use character, number, and date functions in SELECT statements - Describe various types of functions available in SQL - Use CASE and DECODE for conditional expressions - Describe the use of conversion functions (TO_CHAR, TO_NUMBER, TO_DATE)
Using Conversion Functions and Conditional Expressions	- Use the CAST function for data type conversion - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Apply the NVL, NULLIF, and COALESCE functions - Use nested functions
Understanding Oracle Database Architecture - Oracle Database Instance	- Understand Oracle Database instance management - Describe the background processes - Explain the memory structures (SGA, PGA)
Using Subqueries to Solve Queries	- Use single-row subqueries with single-row and multiple-row operators - Define subqueries - Use multiple-row subqueries with multiple-row operators (IN, ANY, ALL) - Use scalar subqueries in SQL - Use subqueries in the WHERE clause and HAVING clause - Describe the types of subqueries (single-row, multi-row, multiple-column)
Using the Set Operators	- Use set operators to combine multiple queries into a single query - Describe set operators (UNION, UNION ALL, INTERSECT, MINUS)
Managing Data in Different Time Zones	- Use various datetime data types (DATE, TIMESTAMP, INTERVAL) - Describe the use of datetime functions (CURRENT_DATE, EXTRACT, LOCALTIMESTAMP) - Explain the concepts of time zones and daylight savings
Managing Schema Objects	- Manage sequences and synonyms - Manage constraints (NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY, CHECK) - Create and modify tables - Create indexes and views
Managing Users, Roles, and Privileges	- Create and manage roles - Create and manage database user accounts - Differentiate system privileges and object privileges - Grant and revoke privileges
Restricting and Sorting Data	- Use comparison operators and logical operators (AND, OR, NOT) - Use the NULL operators (IS NULL, IS NOT NULL) - Use the BETWEEN comparator - Sort data using the ORDER BY clause - Use the WHERE clause to limit retrieved rows - Use the LIKE and IN operators
Working with Oracle Cloud Exadata Express Cloud Service	- Navigate the Exadata Express Cloud Service console - Provision and manage an Exadata Express Cloud Service instance - Identify the prerequisites for Exadata Express Cloud Service - Describe the features and benefits of Exadata Express Cloud Service
Managing Oracle Database Instances	- Manage initialization parameter files (SPFILE, PFILE) - Use the Automatic Diagnostic Repository (ADR) - Start up and shut down an Oracle Database instance - View the alert log and access dynamic performance views

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Oracle Database Administration I 1Z1-082 Prüfungsfragen mit Lösungen (Q21-Q26):

21. Frage
Which three statements are true about dropping and unused columns in an Oracle database? (Choose three.)

A. Partition key columns cannot be dropped.
B. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
C. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
D. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
E. A DROP COLUMN command can be rolled back
F. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.

Antwort: B,C,F

22. Frage
Which two statements are true about the PMON background process? (Choose two.)

A. It frees resources held by abnormally terminated processes
B. It frees unused temporary segments
C. It registers database services with all local and remote listeners known to the database instance
D. It kills sessions that exceed idle time
E. It records checkpoint information in the control file

Antwort: A,C

Begründung:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm

23. Frage
Which two are true about a SQL statement using SET operators such as UNION? (Choose two.)

A. The number, but not names, of columns must be identical for all SELECT statements in the query.
B. The data type of each column returned by the second query must exactly match the data type of the corresponding column returned by the first query.
C. The names and number of columns must be identical for all SELECT statements in the query.
D. The data type group of each column returned by the second query must match the data type of the corresponding column returned by the first query.
E. The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query.

Antwort: B,E

24. Frage
Evaluate these commands which execute successfully:

Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence?
(Choose two.)

A. Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times
B. Sequence ORD_SEQ is guaranteed not to generate duplicate numbers
C. Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ
D. 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
E. If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS

Antwort: B,C

25. Frage
Which three are types of segments in an Oracle Database? (Choose three.)

A. undo
B. stored procedures
C. index
D. sequences
E. clusters
F. tables

Antwort: C,E,F

Begründung:
Explanation/Reference: http://www.adp-gmbh.ch/ora/concepts/segments.html

26. Frage
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