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| Section | Weight | Objectives |
|---|---|---|
| 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 |
| Restricting and Sorting Data | 6% | - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query - Limit the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands |
| Controlling User Access | 5% | - Distinguish between granting privileges and roles - Grant privileges on tables and on a view - Differentiate system privileges from object privileges |
| Using Single-Row Functions to Customize Output | 10% | - Manipulate dates with the date functions - Perform arithmetic with date data - Describe the differences between single-row and multiple-row functions - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate numbers with the ROUND, TRUNC, and MOD functions |
| Displaying Data from Multiple Tables Using Joins | 15% | - 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 - Join a table to itself by using a self-join |
| Manipulating Data | 14% | - Update rows in a table - Delete rows from a table - Describe each data manipulation language (DML) statement - Control transactions - Insert rows into a table |
| Reporting Aggregated Data Using Group Functions | 15% | - Identify the available group functions - Describe the use of group functions - Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause |
| Using Conversion Functions and Conditional Expressions | 10% | - 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 - Describe implicit and explicit data type conversion |
| Working with Oracle Database SQL | 8% | - Create a container database - Start up and shut down a database - Explain the installation of Oracle Database software - Describe the Oracle Database architecture |
| Creating Other Schema Objects | 10% | - Create and maintain indexes - Create, maintain, and use sequences - Create, modify, and retrieve data from a view - Create synonyms for database objects |
| Using Subqueries to Solve Queries | 15% | - Describe the types of problems that subqueries can solve - Define subqueries - List the types of subqueries - Write single-row and multi-row subqueries |
| Using DDL Statements to Create and Manage Tables | 14% | - Describe the data types that are available for columns - Drop, rename, and truncate tables - Review the table structure - Alter table definitions - Create a simple table - Categorize the main database objects |
| 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 |
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NEW QUESTION # 290
In the customers table, the CUST_CITY column contains the value 'Paris' for the CUST_FIRST_NAME 'Abigail'.
Evaluate the following query:
What would be the outcome?
Answer: D
NEW QUESTION # 291
You must create a table EMPLOYEES in which the values in the columns EMPLOYEES_ID and LOGIN_ID must be unique and not null. (Choose two.) Which two SQL statements would create the required table?
Answer: A,B
NEW QUESTION # 292
View the Exhibit and examine the data in the PRODUCTS table.
You must display product names from the PRODUCTS table that belong to the 'Software/other' category with minimum prices as either $2000 or $4000 and with no unit of measure.
You issue this query:
Which statement is true?
Answer: A
NEW QUESTION # 293
Which two statements are true regarding constraints? (Choose two.)
Answer: A,C
NEW QUESTION # 294
Which two are SQL features?
Answer: A,C
Explanation:
SQL (Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system.
A . False. SQL does not have graphical capabilities; it is a textual language for database interaction.
B . False. SQL supports variable definition, but it is not a core feature of the language. Variables are more commonly defined in procedural extensions to SQL, such as PL/SQL in Oracle.
C . True. SQL provides database transaction control through statements like COMMIT, ROLLBACK, and SAVEPOINT.
D . True. SQL is designed for processing sets of data, allowing for operations such as selection, projection, and joins on sets of rows.
E . False. SQL does not provide capabilities to update data in external files. It operates on data within the database.
Reference:
Oracle Documentation on SQL Language: https://docs.oracle.com/database/121/SQLRF/toc.htm
NEW QUESTION # 295
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