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| Section | Objectives |
|---|---|
| Displaying Data from Multiple Tables Using Joins | - Join a table to itself using self-join - Use Equijoins and Non-equijoins - Use OUTER joins (LEFT, RIGHT, FULL) - Describe different types of joins and their features - Use CROSS joins |
| Understanding Oracle Database Architecture - Database Storage Structures | - Manage space in tablespaces - Describe the logical and physical database structures - Describe tablespaces and data files - Create and manage tablespaces |
| Reporting Aggregated Data Using the Group Functions | - Use the HAVING clause to filter grouped data - Use the GROUP BY clause to group data - Describe group functions (AVG, SUM, MIN, MAX, COUNT) |
| 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 | - 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 |
| 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 | - Describe the features and benefits of 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 |
| Retrieving Data using the SQL SELECT Statement | - Use scalar and correlated subqueries - List the capabilities of SQL SELECT statements - Execute a basic SELECT statement - Use the ORDER BY clause - Describe how schema objects work - Use SQL row functions (character, number, date, conversion, general) |
| Introduction to Oracle Database | - Describe Oracle Database Cloud Service (DBCS) architecture and features - Describe Oracle Database instance and memory structures - Describe Oracle Database architecture - Explain database storage structures (data blocks, segments, tablespaces, data files) - Describe Oracle processes (PMON, SMON, DBWn, LGWR, CKPT, others) - Explain Oracle Database server architecture |
| Managing Users, Roles, and Privileges | - Differentiate system privileges and object privileges - Create and manage roles - Grant and revoke privileges - Create and manage database user accounts |
| Understanding Oracle Database Architecture - Oracle Database Instance | - Understand Oracle Database instance management - Describe the background processes - Explain the memory structures (SGA, PGA) |
| Using Single-Row Functions to Customize Output | - Use CASE and DECODE for conditional expressions - Describe the use of conversion functions (TO_CHAR, TO_NUMBER, TO_DATE) - Describe various types of functions available in SQL - Use character, number, and date functions in SELECT statements |
| Managing Oracle Database Instances | - Use the Automatic Diagnostic Repository (ADR) - Start up and shut down an Oracle Database instance - Manage initialization parameter files (SPFILE, PFILE) - View the alert log and access dynamic performance views |
| Using Subqueries to Solve Queries | - Use scalar subqueries in SQL - Use subqueries in the WHERE clause and HAVING clause - Define subqueries - Use multiple-row subqueries with multiple-row operators (IN, ANY, ALL) - Describe the types of subqueries (single-row, multi-row, multiple-column) - Use single-row subqueries with single-row and multiple-row operators |
| 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 - Use nested functions - Apply the NVL, NULLIF, and COALESCE functions |
| Managing Schema Objects | - Create and modify tables - Manage constraints (NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY, CHECK) - Manage sequences and synonyms - Create indexes and views |
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NEW QUESTION # 119
A database is configured to use automatic undo management with temporary undo enabled.
An UPDATE is executed on a temporary table.
Where is the UNDO stored?
Answer: D
NEW QUESTION # 120
Table ORDER_ITEMS contains columns ORDER_ID, UNIT_PRICE and QUANTITY, of data type NUMBER.
Examine these SQL statements:
Statement 1:
SELECT MAX(unit_price * quantity) "Maximum Order"
FROM order_items;
Statement 2:
SELECT MAX(unit_price * quantity) "Maximum Order"
FROM order_items
GROUP BY order_id;
Which two statements are true?
Answer: B,D
Explanation:
https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj27781.html
The Expression can contain multiple column references or expressions, but it cannot contain another aggregate or subquery. It must evaluate to a built-in data type. You can therefore call methods that evaluate to built-in data types. (For example, a method that returns a java.lang.Integer or int evaluates to an INTEGER.) If an expression evaluates to NULL, the aggregate skips that value.
NEW QUESTION # 121
Which two statements are true about single row functions? (Choose two.)
Answer: A,D
NEW QUESTION # 122
Which two statements are true about views used for viewing tablespace and datafile information? (Choose two.)
Answer: C,D
NEW QUESTION # 123
In one of your databases, you create a user, HR, and then execute this command:
GRANT CREATE SESSION TO hr WITH ADMIN OPTION;
Which three actions can HR perform? (Choose three.)
Answer: C,D,E
NEW QUESTION # 124
......
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