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| Section | Objectives |
|---|---|
| Using Single-Row Functions to Customize Output | - Describe the use of conversion functions (TO_CHAR, TO_NUMBER, TO_DATE) - Describe various types of functions available in SQL - Use CASE and DECODE for conditional expressions - Use character, number, and date functions in SELECT statements |
| Managing Users, Roles, and Privileges | - Create and manage database user accounts - Differentiate system privileges and object privileges - Grant and revoke privileges - Create and manage roles |
| Using Conversion Functions and Conditional Expressions | - Use nested functions - Use the CAST function for data type conversion - Apply the NVL, NULLIF, and COALESCE functions - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions |
| Introduction to Oracle Database | - Describe Oracle Database Cloud Service (DBCS) architecture and features - Describe Oracle Database architecture - Explain Oracle Database server architecture - Explain database storage structures (data blocks, segments, tablespaces, data files) - Describe Oracle processes (PMON, SMON, DBWn, LGWR, CKPT, others) - Describe Oracle Database instance and memory structures |
| Using Subqueries to Solve Queries | - Describe the types of subqueries (single-row, multi-row, multiple-column) - Use subqueries in the WHERE clause and HAVING clause - Use single-row subqueries with single-row and multiple-row operators - Use multiple-row subqueries with multiple-row operators (IN, ANY, ALL) - Use scalar subqueries in SQL - Define subqueries |
| Understanding Oracle Database Architecture - Database Storage Structures | - Manage space in tablespaces - Describe the logical and physical database structures - Create and manage tablespaces - Describe tablespaces and data files |
| Retrieving Data using the SQL SELECT Statement | - Use the ORDER BY clause - Use SQL row functions (character, number, date, conversion, general) - Execute a basic SELECT statement - Use scalar and correlated subqueries - List the capabilities of SQL SELECT statements - Describe how schema objects work |
| Reporting Aggregated Data Using the Group Functions | - Use the GROUP BY clause to group data - Describe group functions (AVG, SUM, MIN, MAX, COUNT) - Use the HAVING clause to filter grouped data |
| Managing Oracle Database Instances | - Start up and shut down an Oracle Database instance - Manage initialization parameter files (SPFILE, PFILE) - View the alert log and access dynamic performance views - Use the Automatic Diagnostic Repository (ADR) |
| Displaying Data from Multiple Tables Using Joins | - Join a table to itself using self-join - Use OUTER joins (LEFT, RIGHT, FULL) - Use CROSS joins - Describe different types of joins and their features - Use Equijoins and Non-equijoins |
| 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 Data in Different Time Zones | - Describe the use of datetime functions (CURRENT_DATE, EXTRACT, LOCALTIMESTAMP) - Use various datetime data types (DATE, TIMESTAMP, INTERVAL) - 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 indexes and views - Create and modify tables |
| Using the Set Operators | - Use set operators to combine multiple queries into a single query - Describe set operators (UNION, UNION ALL, INTERSECT, MINUS) |
| Restricting and Sorting Data | - Use the WHERE clause to limit retrieved rows - Use the LIKE and IN operators - Use comparison operators and logical operators (AND, OR, NOT) - Use the BETWEEN comparator - Use the NULL operators (IS NULL, IS NOT NULL) - Sort data using the ORDER BY clause |
| Understanding Oracle Database Architecture - Oracle Database Instance | - Understand Oracle Database instance management - Describe the background processes - Explain the memory structures (SGA, PGA) |
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NEW QUESTION # 46
Which two are true about shrinking a segment online? (Choose two.)
Answer: A,B
NEW QUESTION # 47
You currently have an active transaction in your session and have been granted select access to vstransaction.
In which three situations will re-executing this query still return a row but with a different XID, indicating a new transaction has started?
Answer: B,C,E
NEW QUESTION # 48
Which two statements are true about trace files produced by the Oracle Database server? (Choose two.)
Answer: C,D
Explanation:
Reference:
https://docs.oracle.com/html/E25494_01/monitoring001.htm
Each server and background process can write to an associated trace file. When an internal error is detected by a process, it dumps information about the error to its trace file. Some of the information written to a trace file is intended for the database administrator, and other information is for Oracle Support Services. Trace file information is also used to tune applications and instances.
NEW QUESTION # 49
The SCOTT/TIGER user exists in two databases, BOSTON_DB and DALLAS_DB, in two different locations.
Each database has a tnsnames.ora file defining DALLAS_DB as a service name.
Examine this command:
CREATE DATABASE LINK dblink1 CONNECT TO scott IDENTIFIED BY tiger USING
`dallas_db';
How do you execute the command so that only SCOTT in BOSTON_DB can access the SCOTT schema in DALLAS_DB?
Answer: E
NEW QUESTION # 50
Which two statements are true about trace files produced by the Oracle Database server? (Choose two.)
Answer: C,D
NEW QUESTION # 51
......
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