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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Manipulating Data | 14% | - Insert rows into a table - Control transactions - Update rows in a table - Delete rows from a table - Describe each data manipulation language (DML) statement |
| Topic 2: Using Subqueries to Solve Queries | 15% | - Describe the types of problems that subqueries can solve - Write single-row and multi-row subqueries - List the types of subqueries - Define subqueries |
| Topic 3: Retrieving Data Using the SQL SELECT Statement | 5% | - Differentiate between SQL statements and SQL*Plus commands - List the capabilities of SQL SELECT statements - Execute a basic SELECT statement |
| Topic 4: Using DDL Statements to Create and Manage Tables | 14% | - Categorize the main database objects - Alter table definitions - Describe the data types that are available for columns - Create a simple table - Review the table structure - Drop, rename, and truncate tables |
| Topic 5: Using Single-Row Functions to Customize Output | 10% | - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Perform arithmetic with date data - Describe the differences between single-row and multiple-row functions - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate dates with the date functions |
| Topic 6: 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 7: Using Conversion Functions and Conditional Expressions | 10% | - Use conditional IF THEN ELSE logic in a SELECT statement - Describe implicit and explicit data type conversion - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Apply the NVL, NULLIF, and COALESCE functions to data |
| Topic 8: Controlling User Access | 5% | - Grant privileges on tables and on a view - Differentiate system privileges from object privileges - Distinguish between granting privileges and roles |
| Topic 9: Reporting Aggregated Data Using Group Functions | 15% | - Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause - Identify the available group functions - Describe the use of group functions |
| Topic 10: 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 |
| Topic 11: Working with Oracle Database SQL | 8% | - Start up and shut down a database - Explain the installation of Oracle Database software - Describe the Oracle Database architecture - Create a container database |
| Topic 12: Creating Other Schema Objects | 10% | - Create and maintain indexes - Create, maintain, and use sequences - Create synonyms for database objects - Create, modify, and retrieve data from a view |
| Topic 13: Displaying Data from Multiple Tables Using Joins | 15% | - View data that does not meet a join condition by using outer joins - 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 - Cross join tables |
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NEW QUESTION # 286
Examine this description of the PRODUCTS table:
You successfully execute this command:
Which two statements execute without errors? (Choose two.)
Answer: B,D
NEW QUESTION # 287
Examine this SELECT statement and view the Exhibit to see its output:
SELECT constraints_name, constraints_type, search_condition, r_constraints_name, delete_rule, status, FROM user_constraints WHERE table_name = 'ORDERS'; Which two statements are true about the output? (Choose two.)
Answer: A,C
NEW QUESTION # 288
Examine the structure of the SALES table.
Examine this statement:
Which two statements are true about the SALES1 table? (Choose two.)
Answer: C,E
NEW QUESTION # 289
Examine the description of the PROMTIONS table:
You want to display the unique promotion costs in each promotion category.
Which two queries can be used?
Answer: C,E
Explanation:
To display unique promotion costs in each promotion category, the correct queries that can be used are:
C . SELECT DISTINCT promo_category ||' has '|| promo_cost AS COSTS FROM promotions ORDER BY 1; This query concatenates the promo_category with the literal ' has ' and promo_cost, giving a unique string for each combination of promo_category and promo_cost, which is what we are interested in when we want to list unique costs per category.
D . SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1; This query selects distinct combinations of promo_category and promo_cost, which is exactly what's required to display unique promotion costs in each category.
Options A, B, and E are incorrect:
A is incorrect because it does not use the DISTINCT keyword to ensure uniqueness.
B has incorrect syntax; the DISTINCT keyword should appear directly after SELECT and applies to all columns, not just one.
E is syntactically incorrect and would not execute because the DISTINCT keyword is not used correctly. It should not appear twice in the SELECT clause.
NEW QUESTION # 290
View the Exhibit and examine the data in the PRODUCTS table.
Which statement would add a column called PRICE, which cannot contain NULL?
Answer: C
NEW QUESTION # 291
......
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