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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: 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 2: Using Single-Row Functions to Customize Output | 10% | - Manipulate strings with character function in the SELECT and WHERE clauses - Perform arithmetic with date data - Describe the differences between single-row and multiple-row functions - Manipulate dates with the date functions - Manipulate numbers with the ROUND, TRUNC, and MOD functions |
| Topic 3: Working with Oracle Database SQL | 8% | - Describe the Oracle Database architecture - Create a container database - Start up and shut down a database - Explain the installation of Oracle Database software |
| Topic 4: Using DDL Statements to Create and Manage Tables | 14% | - Drop, rename, and truncate tables - Review the table structure - Describe the data types that are available for columns - Create a simple table - Categorize the main database objects - Alter table definitions |
| Topic 5: Restricting and Sorting Data | 6% | - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Limit the rows that are retrieved by a query |
| Topic 6: Creating Other Schema Objects | 10% | - Create, maintain, and use sequences - Create and maintain indexes - Create, modify, and retrieve data from a view - Create synonyms for database objects |
| Topic 7: Reporting Aggregated Data Using Group Functions | 15% | - Identify the available group functions - Include or exclude grouped rows by using the HAVING clause - Group data by using the GROUP BY clause - Describe the use of group functions |
| Topic 8: Using Set Operators | 5% | - Describe the order of precedence when the set operators are used - Describe set operators - Use a set operator to combine multiple queries into a single query |
| Topic 9: 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 10: Using Subqueries to Solve Queries | 15% | - List the types of subqueries - Define subqueries - Describe the types of problems that subqueries can solve - Write single-row and multi-row subqueries |
| Topic 11: Using Conversion Functions and Conditional Expressions | 10% | - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Describe implicit and explicit data type conversion - Use conditional IF THEN ELSE logic in a SELECT statement - Apply the NVL, NULLIF, and COALESCE functions to data |
| Topic 12: Manipulating Data | 14% | - Update rows in a table - Describe each data manipulation language (DML) statement - Delete rows from a table - Insert rows into a table - Control transactions |
| Topic 13: 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 - Cross join tables - Write SELECT statements to access data from more than one table using equijoins and non-equijoins |
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NEW QUESTION # 391
Which two statements are true regarding savepoints? (Choose two.)
Answer: B,D
Explanation:
Explanation/Reference:
Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/
statements_10001.htm#SQLRF01701
NEW QUESTION # 392
Which two statements are true about the results of using the INTERSECToperator in compound queries?
(Choose two.)
Answer: A,E
NEW QUESTION # 393
Examine the ORDER _ITEms table:
Which two queries return rows where QUANTITY is a multiple of ten?
Answer: C,D
Explanation:
A: This statement will not work because TRUNC(quantity, -1) will truncate the quantity to zero decimal places when the number is a negative power of ten, which does not guarantee that the quantity is a multiple of ten.
B: This statement is correct. The MOD function returns the remainder of a division. If MOD(quantity, 10) equals zero, it means that quantity is a multiple of ten.
C: This statement is correct. FLOOR(quantity / 10) equals TRUNC(quantity / 10) when quantity is an exact multiple of ten, as FLOOR returns the largest integer less than or equal to a number, and TRUNC will truncate the decimal part.
D: This statement is incorrect because TRUNC(quantity) would remove any decimal places from quantity, and comparing it to quantity / 10 will not guarantee that the quantity is a multiple of ten.
E: This statement is incorrect. ROUND(quantity, 1) will round the quantity to one decimal place, not check if it's a multiple of ten.
NEW QUESTION # 394
Examine the structure proposed for the TRANSACTIONS table:
Which two statements are true regarding the storage of data in the above table structure? (Choose two.)
Answer: C,D
NEW QUESTION # 395
A session's NLS_DATE_FORMAT is set to DD Mon YYYY .
Which two queries return the value 1 Jan 2019?
Answer: B
Explanation:
When the NLS_DATE_FORMAT is set to DD Mon YYYY, the database expects the date string to be in the format of day, abbreviated month name, and full year.
B). The query SELECT DATE '2019-01-01' FROM DUAL; correctly returns the value 1 Jan 2019 because the ANSI date literal DATE 'YYYY-MM-DD' is independent of the NLS_DATE_FORMAT parameter.
Option A is incorrect because the TO_DATE function requires the format model to match the string literal, which it does not in this case.
Option C is incorrect because TO_CHAR is used to convert a date to a string, not a string to a date.
Option D is incorrect because without specifying that the string is a date, the result is just a string and not a date value.
Option E is incorrect because TO_DATE without a format model relies on the NLS_DATE_FORMAT to interpret the string, and YYYY-MM-DD does not match DD Mon YYYY.
NEW QUESTION # 396
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