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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Subqueries to Solve Queries | 15% | - List the types of subqueries - Define subqueries - Write single-row and multi-row subqueries - Describe the types of problems that subqueries can solve |
| Topic 2: Creating Other Schema Objects | 10% | - Create, maintain, and use sequences - Create synonyms for database objects - Create, modify, and retrieve data from a view - Create and maintain indexes |
| Topic 3: 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 4: 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 5: Using Single-Row Functions to Customize Output | 10% | - Manipulate strings with character function in the SELECT and WHERE clauses - Perform arithmetic with date data - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Manipulate dates with the date functions - Describe the differences between single-row and multiple-row functions |
| Topic 6: Using Conversion Functions and Conditional Expressions | 10% | - Describe implicit and explicit data type conversion - 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 |
| Topic 7: 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 8: Restricting and Sorting Data | 6% | - Limit the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query |
| Topic 9: Controlling User Access | 5% | - Distinguish between granting privileges and roles - Differentiate system privileges from object privileges - Grant privileges on tables and on a view |
| Topic 10: Manipulating Data | 14% | - Delete rows from a table - Describe each data manipulation language (DML) statement - Update rows in a table - Insert rows into a table - Control transactions |
| Topic 11: 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 |
| Topic 12: Working with Oracle Database SQL | 8% | - Start up and shut down a database - Create a container database - Describe the Oracle Database architecture - Explain the installation of Oracle Database software |
| Topic 13: Using DDL Statements to Create and Manage Tables | 14% | - Describe the data types that are available for columns - Review the table structure - Alter table definitions - Drop, rename, and truncate tables - Create a simple table - Categorize the main database objects |
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NEW QUESTION # 398
Which three statements are true about dropping and unused columns in an Oracle database?
Answer: B,C,E
NEW QUESTION # 399
Which two statements are true about INTERVAL data types? (Choose two.)
Answer: A,B
Explanation:
https://www.oracletutorial.com/oracle-basics/oracle-interval/
NEW QUESTION # 400
You are designing the structure of a table in which two columns have the specifications:
COMPONENT_ID- must be able to contain a maximum of 12 alphanumeric characters and must uniquely identify the row EXECUTION_DATETIME- contains Century, Year, Month, Day, Hour, Minute, Second to the maximum precision and is used for calculations and comparisons between components.
Which two options define the data types that satisfy these requirements most efficiently? (Choose two.)
Answer: A,E
NEW QUESTION # 401
Which statement is true regarding the default behavior of the ORDER BYclause?
Answer: B
NEW QUESTION # 402
Examine the structure of the EMPLOYEEStable:
There is a parent/child relationship between EMPLOYEE_IDand MANAGER_ID.
You want to display the name, joining date, and manager for all employees. Newly hired employees are yet to be assigned a department or a manager. For them, 'No Manager' should be displayed in the MANAGERcolumn.
Which SQL query gets the required output?
SELECT e.last_name, e.hire_date, NVL(m.last_name, 'No Manager') Manager
Answer: A
NEW QUESTION # 403
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