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| Section | Weight | Objectives |
|---|---|---|
| Using Subqueries to Solve Queries | 15% | - Define subqueries - Write single-row and multi-row subqueries - List the types of subqueries - Describe the types of problems that subqueries can solve |
| Manipulating Data | 14% | - Delete rows from a table - Update rows in a table - Control transactions - Describe each data manipulation language (DML) statement - Insert rows into a table |
| Displaying Data from Multiple Tables Using Joins | 15% | - 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 - View data that does not meet a join condition by using outer joins - Cross join tables |
| 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 |
| Controlling User Access | 5% | - Grant privileges on tables and on a view - Distinguish between granting privileges and roles - Differentiate system privileges from object privileges |
| Creating Other Schema Objects | 10% | - Create, modify, and retrieve data from a view - Create, maintain, and use sequences - Create and maintain indexes - Create synonyms for database objects |
| Using Conversion Functions and Conditional Expressions | 10% | - Use conditional IF THEN ELSE logic in a SELECT statement - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Apply the NVL, NULLIF, and COALESCE functions to data - Describe implicit and explicit data type conversion |
| Reporting Aggregated Data Using Group Functions | 15% | - Group data by using the GROUP BY clause - Describe the use of group functions - Identify the available group functions - Include or exclude grouped rows by using the HAVING clause |
| Working with Oracle Database SQL | 8% | - Start up and shut down a database - Describe the Oracle Database architecture - Explain the installation of Oracle Database software - Create a container database |
| 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 |
| Retrieving Data Using the SQL SELECT Statement | 5% | - List the capabilities of SQL SELECT statements - Differentiate between SQL statements and SQL*Plus commands - Execute a basic SELECT statement |
| Using Single-Row Functions to Customize Output | 10% | - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Perform arithmetic with date data - Manipulate dates with the date functions - Describe the differences between single-row and multiple-row functions |
| Using DDL Statements to Create and Manage Tables | 14% | - Describe the data types that are available for columns - Alter table definitions - Review the table structure - Drop, rename, and truncate tables - Create a simple table - Categorize the main database objects |
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NEW QUESTION # 384
Examine the structure of the PROMOTIONS table: (Choose the best answer.)
Management requires a report of unique promotion costs in each promotion category.
Which query would satisfy this requirement?
Answer: D
NEW QUESTION # 385
Examine the data in the NEW_EMPLOYEES table:
Update existing employee details in the EMPLOYEES table with data from the NEW_EMPLOYEES table.
2. Add new employee details from the NEW_EMPLOYEES table to the EMPLOYEES table.
Which statement will do this?
A)
B)
C)
D)
Answer: B
NEW QUESTION # 386
Examine the structure of the PROGRAMS table:
Which two SQL statements would execute successfully?
Answer: A,B
NEW QUESTION # 387
Evaluate the following query:
What would be the outcome of the above query?
Answer: A
NEW QUESTION # 388
View the Exhibit and examine the structure of the EMPLOYEES and JOB_HISTORY tables. (Choose all that apply.)
Examine this query which must select the employee IDs of all the employees who have held the job SA_MAN at any time during their employment.
SELECT EMPLOYEE_ID
FROM EMPLOYEES
WHERE JOB_ID = 'SA_MAN'
-------------------------------------
SELECT EMPLOYEE_ID
FROM JOB_HISTORY
WHERE JOB_ID = 'SA_MAN';
Choose two correct SET operators which would cause the query to return the desired result.
Answer: B,D
NEW QUESTION # 389
......
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