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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Set Operators | 5% | - Describe set operators - Describe the order of precedence when the set operators are used - Use a set operator to combine multiple queries into a single query |
| Topic 2: Displaying Data from Multiple Tables Using Joins | 15% | - Join a table to itself by using a self-join - View data that does not meet a join condition by using outer joins - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - Cross join tables |
| Topic 3: Manipulating Data | 14% | - Insert rows into a table - Delete rows from a table - Describe each data manipulation language (DML) statement - Update rows in a table - Control transactions |
| Topic 4: Restricting and Sorting Data | 6% | - Use DEFINE and UNDEFINE commands - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query - Limit the rows that are retrieved by a query |
| Topic 5: Retrieving Data Using the SQL SELECT Statement | 5% | - Execute a basic SELECT statement - List the capabilities of SQL SELECT statements - Differentiate between SQL statements and SQL*Plus commands |
| Topic 6: 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 7: Using DDL Statements to Create and Manage Tables | 14% | - Drop, rename, and truncate tables - Categorize the main database objects - Create a simple table - Describe the data types that are available for columns - Alter table definitions - Review the table structure |
| Topic 8: Using Single-Row Functions to Customize Output | 10% | - Manipulate dates with the date functions - Perform arithmetic with date data - Manipulate strings with character function in the SELECT and WHERE clauses - Describe the differences between single-row and multiple-row functions - Manipulate numbers with the ROUND, TRUNC, and MOD functions |
| Topic 9: Using Subqueries to Solve Queries | 15% | - Write single-row and multi-row subqueries - List the types of subqueries - Define subqueries - Describe the types of problems that subqueries can solve |
| Topic 10: Reporting Aggregated Data Using Group Functions | 15% | - Include or exclude grouped rows by using the HAVING clause - Describe the use of group functions - Identify the available group functions - Group data by using the GROUP BY clause |
| Topic 11: Creating Other Schema Objects | 10% | - Create, modify, and retrieve data from a view - Create and maintain indexes - Create synonyms for database objects - Create, maintain, and use sequences |
| Topic 12: Working with Oracle Database SQL | 8% | - Explain the installation of Oracle Database software - Start up and shut down a database - Create a container database - Describe the Oracle Database architecture |
| Topic 13: Controlling User Access | 5% | - Differentiate system privileges from object privileges - Distinguish between granting privileges and roles - Grant privileges on tables and on a view |
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NEW QUESTION # 336
Which three statements are true?
Answer: A,C,D
NEW QUESTION # 337
Which is the default column or columns for sorting output from compound queries using SET operators such as INTERSECT in a SQL statement?
Answer: A
Explanation:
For the sorting of output in compound queries (INTERSECT, UNION, etc.):
D . The first column in the first SELECT of the compound query: By default, Oracle does not automatically sort the results of SET operations unless an ORDER BY clause is explicitly stated. However, if an ORDER BY is implied or specified without explicit columns, the default sorting would logically involve the first column specified in the first SELECT statement of the compound query.
NEW QUESTION # 338
View the Exhibit and examine the data in the PRODUCT_INFORMATIONtable.
Which two tasks would require subqueries? (Choose two.)
Answer: A,D
NEW QUESTION # 339
In your session, the NLS_DATE_FORMATis DD-MM-YYYY.
There are 86400 seconds in a day.
Examine this result:
DATE
-----------
02-JAN-2020
Which statement returns this?
Answer: D
NEW QUESTION # 340
Which three statements are true about GLOBAL TEMPORARY TABLES?
Answer: C,E,F
Explanation:
Global temporary tables (GTTs) in Oracle have unique properties related to session-based visibility and data persistence:
B . A TRUNCATE command issued in a session causes all rows in a GLOBAL TEMPORARY TABLE for the issuing session to be deleted: True, TRUNCATE is session-specific for GTTs and will remove all rows inserted by the session that issues the TRUNCATE command.
D . A GLOBAL TEMPORARY TABLE's definition is available to multiple sessions: The structure of a GTT is persistent and shared across sessions, but the data within is session-specific.
E . Any GLOBAL TEMPORARY TABLE rows existing at session termination will be deleted: The data in GTTs is private for the session, and when the session ends, the data is deleted automatically.
Reference:
Oracle Database Concepts and SQL Language Reference 12c, especially the sections on temporary tables.
NEW QUESTION # 341
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