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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Creating Other Schema Objects | 10% | - Create, maintain, and use sequences - Create, modify, and retrieve data from a view - Create and maintain indexes - Create synonyms for database objects |
| Topic 2: Restricting and Sorting Data | 6% | - Limit the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands |
| Topic 3: Using Set Operators | 5% | - Describe the order of precedence when the set operators are used - Use a set operator to combine multiple queries into a single query - Describe set operators |
| Topic 4: Retrieving Data Using the SQL SELECT Statement | 5% | - List the capabilities of SQL SELECT statements - Execute a basic SELECT statement - Differentiate between SQL statements and SQL*Plus commands |
| Topic 5: Displaying Data from Multiple Tables Using Joins | 15% | - Join a table to itself by using a self-join - Cross join tables - 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 |
| Topic 6: Working with Oracle Database SQL | 8% | - Create a container database - Explain the installation of Oracle Database software - Describe the Oracle Database architecture - Start up and shut down a database |
| Topic 7: 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 8: Using DDL Statements to Create and Manage Tables | 14% | - Describe the data types that are available for columns - Review the table structure - Categorize the main database objects - Drop, rename, and truncate tables - Create a simple table - Alter table definitions |
| Topic 9: Using Subqueries to Solve Queries | 15% | - Write single-row and multi-row subqueries - Define subqueries - Describe the types of problems that subqueries can solve - List the types of subqueries |
| Topic 10: Reporting Aggregated Data Using Group Functions | 15% | - Describe the use of group functions - Identify the available group functions - Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause |
| Topic 11: Using Single-Row Functions to Customize Output | 10% | - Manipulate dates with the date functions - 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 - Describe the differences between single-row and multiple-row functions |
| Topic 12: Manipulating Data | 14% | - Update rows in a table - Insert rows into a table - Control transactions - Delete rows from a table - Describe each data manipulation language (DML) statement |
| Topic 13: Controlling User Access | 5% | - Distinguish between granting privileges and roles - Differentiate system privileges from object privileges - Grant privileges on tables and on a view |
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NEW QUESTION # 356
View the exhibit for the structure of the STUDENTand FACULTYtables.
You need to display the faculty name followed by the number of students handled by the faculty at the base location.
Examine the following two SQL statements:
Statement 1
SQL>SELECT faculty_name, COUNT(student_id)
FROM student JOIN faculty
USING (faculty_id, location_id)
GROUP BY faculty_name;
Statement 2
SQL>SELECT faculty_name, COUNT(student_id)
FROM student NATURAL JOIN faculty
GROUP BY faculty_name;
Which statement is true regarding the outcome?
Answer: C
NEW QUESTION # 357
View the Exhibit and examine the structure of the CUSTOMERS table.
Which two tasks would require subqueries or joins to be executed in a single statement? (Choose two.)
Answer: A,E
Explanation:
Describe the Types of Problems That the Subqueries Can Solve There are many situations where you will need the result of one query as the input for another.
Use of a Subquery Result Set for Comparison Purposes Which employees have a salary that is less than the average salary? This could be answered by two statements, or by a single statement with a subquery. The following example uses two statements:
select avg(salary) from employees;
select last_name from employees where salary < result_of_previous_query ; Alternatively, this example uses one statement with a subquery:
select last_name from employees where salary < (select avg(salary)from employees); In this example, the subquery is used to substitute a value into the WHERE clause of the parent query:
it is returning a single value, used for comparison with the rows retrieved by the parent query.
The subquery could return a set of rows. For example, you could use the following to find all departments that do actually have one or more employees assigned to them:
select department_name from departments where department_id in (select
distinct(department_id) from employees);
NEW QUESTION # 358
View the Exhibit and examine the details of the PRODUCT_INFORMATION table. (Choose two.)
Evaluate this SQL statement:
SELECT TO_CHAR(list_price,'$9,999')
From product_information;
Which two statements are true regarding the output? (Choose two.)
Answer: B,D
NEW QUESTION # 359
Which three are true about dropping columns from a table?
Answer: A,B,E
NEW QUESTION # 360
Examine the data in the CUST_NAMEcolumn of the CUSTOMERStable.
CUST_NAME
-------------------
Renske Ladwig
Jason Mallin
Samuel McCain
Allan MCEwen
Irene Mikkilineni
Julia Nayer
You need to display customers' second names where the second name starts with "Mc" or "MC".
Which query gives the required output?
SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
Answer: A
NEW QUESTION # 361
......
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