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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Reporting Aggregated Data Using Group Functions | 15% | - Describe the use of group functions - Group data by using the GROUP BY clause - Identify the available group functions - Include or exclude grouped rows by using the HAVING clause |
| Topic 2: Using Subqueries to Solve Queries | 15% | - Write single-row and multi-row subqueries - List the types of subqueries - Describe the types of problems that subqueries can solve - Define subqueries |
| Topic 3: Creating Other Schema Objects | 10% | - Create, modify, and retrieve data from a view - Create, maintain, and use sequences - Create and maintain indexes - Create synonyms for database objects |
| Topic 4: Using DDL Statements to Create and Manage Tables | 14% | - Describe the data types that are available for columns - Drop, rename, and truncate tables - Alter table definitions - Review the table structure - Categorize the main database objects - Create a simple table |
| Topic 5: Using Conversion Functions and Conditional Expressions | 10% | - Describe implicit and explicit data type conversion - Apply the NVL, NULLIF, and COALESCE functions to data - Use conditional IF THEN ELSE logic in a SELECT statement - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions |
| Topic 6: Working with Oracle Database SQL | 8% | - Create a container database - Describe the Oracle Database architecture - Start up and shut down a database - Explain the installation of Oracle Database software |
| Topic 7: Retrieving Data Using the SQL SELECT Statement | 5% | - Execute a basic SELECT statement - Differentiate between SQL statements and SQL*Plus commands - List the capabilities of SQL SELECT statements |
| Topic 8: Using Set Operators | 5% | - Use a set operator to combine multiple queries into a single query - Describe set operators - Describe the order of precedence when the set operators are used |
| Topic 9: Controlling User Access | 5% | - Distinguish between granting privileges and roles - Grant privileges on tables and on a view - Differentiate system privileges from object privileges |
| Topic 10: 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 - Manipulate strings with character function in the SELECT and WHERE clauses - Perform arithmetic with date data |
| Topic 11: Restricting and Sorting Data | 6% | - Use ampersand substitution to restrict and sort output at runtime - Limit the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Sort the rows that are retrieved by a query |
| Topic 12: Manipulating Data | 14% | - Insert rows into a table - Describe each data manipulation language (DML) statement - Control transactions - Update rows in a table - Delete rows from a table |
| Topic 13: 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 - Cross join tables - View data that does not meet a join condition by using outer joins |
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NEW QUESTION # 368
In which normal form is a table, if it has no multi-valued attributes and no partial dependencies?
Answer: B
Explanation:
https://blog.udemy.com/database-normal-forms/
NEW QUESTION # 369
Which three privileges can be restricted to a subset of columns in a table? (Choose three.) ALTER
Answer: C,F,G
NEW QUESTION # 370
Which three statements are true reading subquenes?
Answer: B,D,F
NEW QUESTION # 371
See the Exhibit and examine the structure of the PROMOTIONS table:
Using the PROMOTIONS table,
you need to find out the average cost for all promos in the range $0-2000 and $2000-5000 in category A.
You issue the following SQL statements:
What would be the outcome?
Answer: D
Explanation:
Explanation/Reference:
Explanation:
CASE Expression
Facilitates conditional inquiries by doing the work of an IF-THEN-ELSE statement:
CASE expr WHEN comparison_expr1 THEN return_expr1
[WHEN comparison_expr2 THEN return_expr2
WHEN comparison_exprn THEN return_exprn
ELSE else_expr]
END
NEW QUESTION # 372
Which statement will return a comma-separated list of employee names in alphabetical order for each department in the EMP table?
Answer: B
NEW QUESTION # 373
......
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