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| Section | Weight | Objectives |
|---|---|---|
| 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 |
| 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% | - 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 |
| Creating Other Schema Objects | 10% | - Create synonyms for database objects - Create and maintain indexes - Create, modify, and retrieve data from a view - Create, maintain, and use sequences |
| Controlling User Access | 5% | - Distinguish between granting privileges and roles - Differentiate system privileges from object privileges - Grant privileges on tables and on a view |
| Using Single-Row Functions to Customize Output | 10% | - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Describe the differences between single-row and multiple-row functions - Manipulate dates with the date functions - Perform arithmetic with date data - Manipulate strings with character function in the SELECT and WHERE clauses |
| Using DDL Statements to Create and Manage Tables | 14% | - Create a simple table - Review the table structure - Drop, rename, and truncate tables - Describe the data types that are available for columns - Categorize the main database objects - Alter table definitions |
| Working with Oracle Database SQL | 8% | - Describe the Oracle Database architecture - Start up and shut down a database - Create a container database - Explain the installation of Oracle Database software |
| Restricting and Sorting Data | 6% | - Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Limit the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime |
| Using Subqueries to Solve Queries | 15% | - Describe the types of problems that subqueries can solve - List the types of subqueries - Write single-row and multi-row subqueries - Define subqueries |
| Using Set Operators | 5% | - Use a set operator to combine multiple queries into a single query - Describe the order of precedence when the set operators are used - Describe set operators |
| Displaying Data from Multiple Tables Using Joins | 15% | - Join a table to itself by using a self-join - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - View data that does not meet a join condition by using outer joins - Cross join tables |
| Manipulating Data | 14% | - Insert rows into a table - Control transactions - Delete rows from a table - Update rows in a table - Describe each data manipulation language (DML) statement |
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NEW QUESTION # 338
Examine the data in the PRODUCTS table:
Examine these queries:
1. SELECT prod name, prod list
FROM products
WHERE prod 1ist NOT IN(10,20) AND category _id=1;
2. SELECT prod name, | prod _ list
FROM products
WHERE prod list < > ANY (10,20) AND category _id= 1;
SELECT prod name, prod _ list
FROM products
WHERE prod_ list <> ALL (10, 20) AND category _ id= 1;
Which queries generate the same output?
Answer: D
Explanation:
Based on the given PRODUCTS table and the SQL queries provided:
Query 1: Excludes rows where prod_list is 10 or 20 and category_id is 1.
Query 2: Includes rows where prod_list is neither 10 nor 20 and category_id is 1.
Query 3: Excludes rows where prod_list is both 10 and 20 (which is not possible for a single value) and category_id is 1.
The correct answer is A, queries 1 and 3 will produce the same result. Both queries exclude rows where prod_list is 10 or 20 and include only rows from category_id 1. The NOT IN operator excludes the values within the list, and <> ALL operator ensures that prod_list is not equal to any of the values in the list, which effectively excludes the same set of rows.
Query 2, using the <> ANY operator, is incorrect because this operator will return true if prod_list is different from any of the values in the list, which is not the logic represented by the other two queries.
NEW QUESTION # 339
View the Exhibit and examine the structure of the PRODUCT_INFORMATION table.
PRODUCT_ID column is the primary key.
You create an index using this command:
SQL > CREATE INDEX upper_name_idx
ON product_information(UPPER(product_name));
No other indexes exist on the PRODUCT_INFORMATION table.
Which query would use the UPPER_NAME_IDX index? (Choose the best answer.)
Answer: C
NEW QUESTION # 340
View the Exhibit and examine the structure of ORDERSand ORDER_ITEMStables.
ORDER_IDis the primary key in the ORDERStable. It is also the foreign key in the ORDER_ITEMStable wherein it is created with the ON DELETE CASCADEoption.
Which DELETEstatement would execute successfully?
Answer: A
NEW QUESTION # 341
You issue the following command to drop the PRODUCTStable:
SQL > DROP TABLE products;
Which three statements are true about the implication of this command?
Answer: B,D,E
NEW QUESTION # 342
Which two statements are true regarding savepoints? (Choose two.)
Answer: B,D
Explanation:
References:
NEW QUESTION # 343
......
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