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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Views | - Updatable and read-only views - Create, modify and drop views | |
| Topic 2: Aggregating Data Using Group Functions | 10% | - SUM, AVG, COUNT, MAX, MIN functions - GROUP BY and HAVING clauses - Handling NULLs in group functions |
| Topic 3: Relational Database Concepts | 10% | - Relationship between database and SQL - ERD and SQL statement mapping - Theoretical and physical aspects of relational databases |
| Topic 4: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 5: Managing Tables and Constraints | - Constraints: primary key, foreign key, unique, check, not null - Data types, creating/altering/dropping tables - Temporary and external tables | |
| Topic 6: Displaying Data from Multiple Tables | 15% | - Equijoins and non-equijoins - Cartesian products - Self-joins and outer joins |
| Topic 7: Managing Indexes, Synonyms and Sequences | - Create and maintain indexes - Create and use synonyms - Create and use sequences | |
| Topic 8: Conversion Functions and Conditional Expressions | 10% | - TO_CHAR, TO_NUMBER, TO_DATE functions - Implicit and explicit data type conversion - NVL, NULLIF, COALESCE and CASE expressions |
| Topic 9: Restricting and Sorting Data | 15% | - Substitution variables, DEFINE and VERIFY commands - WHERE clause and filtering conditions - ORDER BY clause and sorting rules - Operator precedence |
| Topic 10: Controlling User Access | - System and object privileges - Roles, granting and revoking privileges | |
| Topic 11: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 12: Manipulating Data and Managing Transactions | - Multi-table inserts - INSERT, UPDATE, DELETE, MERGE statements - Transaction control: COMMIT, ROLLBACK, SAVEPOINT | |
| Topic 13: Retrieving Data Using SQL SELECT Statement | 20% | - Arithmetic operations and NULL handling - SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT |
| Topic 14: Using SET Operators | - UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations | |
| Topic 15: Using Single-Row Functions to Customize Output | 20% | - Character, number, and date functions - Nested functions usage |
| Topic 16: Using Subqueries to Solve Queries | - Correlated subqueries for update/delete - Single-row and multi-row subqueries |
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NEW QUESTION # 436
Examine the structure of the BOOKS_TRANSACTIONS table:
You want to display the member IDs, due date, and late fee as $2 for all transactions.
Which SQL statement must you execute?
Answer: B
NEW QUESTION # 437
View and Exhibit and examine the structure and data in the INVOICE table.
Which two statements are true regarding data type conversion in query expressions? (Choose two.)
Answer: B,E
NEW QUESTION # 438
You issued this command:
SQL > DROP TABLE employees;
Which three statements are true? (Choose three.)
Answer: A,B,D
NEW QUESTION # 439
Which three are true about privileges and roles?
Answer: A,F,G
Explanation:
Roles and privileges in Oracle manage access and capabilities within the database:
Option A: False. Roles are not "owned" in the traditional sense by the user who created them. They exist independently within the Oracle database and are assigned to users.
Option B: False. System privileges can be very granular, affecting specific types of operations or database objects, not always the entire database.
Option C: False. Roles are not owned by the SYS schema but are managed by database security and can be created by any user with sufficient privileges.
Option D: True. A role can indeed contain a combination of several privileges, including other roles, allowing for flexible and layered security configurations.
Option E: True. By default, a user has all object privileges for objects they own (i.e., objects in their schema).
Option F: False. PUBLIC is a special designation that applies to all users; individual privileges granted to PUBLIC cannot be revoked from a single user without revoking them from all users.
Option G: True. PUBLIC is a role granted by default to every user in an Oracle database, providing basic privileges necessary for general usability of the database.
NEW QUESTION # 440
Examine the description of the SALEStable:
The SALEStable has 55,000 rows.
Examine this statement:
Which two statements are true? (Choose two.)
Answer: A,E
NEW QUESTION # 441
......
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