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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Subqueries to Solve Queries | 15% | - Describe the types of problems that subqueries can solve - List the types of subqueries - Define subqueries - Write single-row and multi-row subqueries |
| Topic 2: Displaying Data from Multiple Tables Using Joins | 15% | - View data that does not meet a join condition by using outer joins - Cross join tables - 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 |
| Topic 3: Manipulating Data | 14% | - Delete rows from a table - Describe each data manipulation language (DML) statement - Update rows in a table - Control transactions - Insert rows into a table |
| Topic 4: 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 5: Creating Other Schema Objects | 10% | - Create, maintain, and use sequences - Create, modify, and retrieve data from a view - Create synonyms for database objects - Create and maintain indexes |
| Topic 6: Using Conversion Functions and Conditional Expressions | 10% | - Use conditional IF THEN ELSE logic in a SELECT statement - Apply the NVL, NULLIF, and COALESCE functions to data - Describe implicit and explicit data type conversion - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions |
| Topic 7: Working with Oracle Database SQL | 8% | - Explain the installation of Oracle Database software - Create a container database - Describe the Oracle Database architecture - Start up and shut down a database |
| Topic 8: Using Single-Row Functions to Customize Output | 10% | - Perform arithmetic with date data - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate dates with the date functions - Describe the differences between single-row and multiple-row functions - Manipulate numbers with the ROUND, TRUNC, and MOD functions |
| Topic 9: Restricting and Sorting Data | 6% | - Limit the rows that are retrieved by a query - Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Use ampersand substitution to restrict and sort output at runtime |
| Topic 10: Reporting Aggregated Data Using Group Functions | 15% | - Describe the use of group functions - Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause - Identify the available group functions |
| Topic 11: Controlling User Access | 5% | - Differentiate system privileges from object privileges - Grant privileges on tables and on a view - Distinguish between granting privileges and roles |
| Topic 12: Retrieving Data Using the SQL SELECT Statement | 5% | - Differentiate between SQL statements and SQL*Plus commands - Execute a basic SELECT statement - List the capabilities of SQL SELECT statements |
| Topic 13: Using DDL Statements to Create and Manage Tables | 14% | - Review the table structure - Categorize the main database objects - Alter table definitions - Drop, rename, and truncate tables - Create a simple table - Describe the data types that are available for columns |
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NEW QUESTION # 192
Examine the description of the EMPLOYEES table:
Examine these requirements:
1. Display the last name, date of hire and the number of years of service for each employee.
2. If the employee has been employed 5 or more years but less than 10, display "5+ years of service".
3. If the employee has been employed 10 or more years but less than 15, display "10+ years of service".
4. If the employee has been employed 15 or more years, display "15+ years of service".
5. If none of these conditions matches, display "<5 years of service".
6. Sort the results by the HIRE_DATE column.
Which statement satisfies all the requirements?
Answer: D
NEW QUESTION # 193
Which two are true about the data dictionary? (Choose two.)
Answer: A,B
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B28359_01/server.111/b28318/datadict.htm#CNCPT1215
NEW QUESTION # 194
In the PROMOTIONS table, the PROMO_BEGIN_DATEcolumn is of data type DATEand the default date format is DD-MON-RR.
Which two statements are true about expressions using PROMO_BEGIN_DATEcontained a query? (Choose two.)
Answer: B,E
NEW QUESTION # 195
The CUSTOMERS table has a CUST_CREDT_LIMIT column of data type number.
Which two queries execute successfully?
Answer: B,C
Explanation:
A : True - The TO_CHAR function is used correctly here to convert the numeric value to a string, and NVL handles the case where cust_credit_limit might be NULL. The expression inside NVL computes 15% of the credit limit or displays 'Not Available' if the credit limit is NULL. The syntax is correct.
B : False - The NVL2 function requires three parameters: the expression to check for NULL, the value to return if it's not NULL, and the value to return if it is NULL. The given usage lacks the required parameters and syntax.
C : False - The NVL function expects both parameters to be of the same data type. Since the second parameter 'Not Available' is a string, it causes a data type conflict with the numerical result of the first parameter.
D : False - The keyword SELECT is misspelled as SLECT, making the syntax incorrect.
NEW QUESTION # 196
View the exhibit and examine the structure and data in the invoice table. (Choose two.)
Which two SQL statements would execute successfully?
Answer: A,C
NEW QUESTION # 197
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