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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Conversion Functions and Conditional Expressions | 10% | - NVL, NULLIF, COALESCE and CASE expressions - TO_CHAR, TO_NUMBER, TO_DATE functions - Implicit and explicit data type conversion |
| Topic 2: Displaying Data from Multiple Tables | 15% | - Cartesian products - Equijoins and non-equijoins - Self-joins and outer joins |
| Topic 3: Aggregating Data Using Group Functions | 10% | - GROUP BY and HAVING clauses - SUM, AVG, COUNT, MAX, MIN functions - Handling NULLs in group functions |
| Topic 4: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
| Topic 5: Controlling User Access | - Roles, granting and revoking privileges - System and object privileges | |
| Topic 6: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 7: Relational Database Concepts | 10% | - ERD and SQL statement mapping - Theoretical and physical aspects of relational databases - Relationship between database and SQL |
| Topic 8: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 9: Retrieving Data Using SQL SELECT Statement | 20% | - SELECT statement syntax and usage - Arithmetic operations and NULL handling - Column aliases, concatenation, literals and DISTINCT |
| Topic 10: Managing Indexes, Synonyms and Sequences | - Create and use synonyms - Create and use sequences - Create and maintain indexes | |
| Topic 11: Using Subqueries to Solve Queries | - Correlated subqueries for update/delete - Single-row and multi-row subqueries | |
| Topic 12: Using SET Operators | - Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators | |
| Topic 13: Managing Tables and Constraints | - Data types, creating/altering/dropping tables - Temporary and external tables - Constraints: primary key, foreign key, unique, check, not null | |
| Topic 14: Manipulating Data and Managing Transactions | - INSERT, UPDATE, DELETE, MERGE statements - Multi-table inserts - Transaction control: COMMIT, ROLLBACK, SAVEPOINT | |
| Topic 15: Restricting and Sorting Data | 15% | - Operator precedence - WHERE clause and filtering conditions - ORDER BY clause and sorting rules - Substitution variables, DEFINE and VERIFY commands |
| Topic 16: Managing Views | - Create, modify and drop views - Updatable and read-only views |
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NEW QUESTION # 362
Examine the description of the EMPLOYEEStable:
Examine this query:
Which line produces an error?
Answer: A
NEW QUESTION # 363
Examine the structure of the two tables.
Which two queries execute successfully? (Choose two.)
Answer: B,E
NEW QUESTION # 364
Examine the description of the PRODUCT_DETAILStable:
Which two statements are true? (Choose two.)
Answer: A,C
NEW QUESTION # 365
Examine the structure of the DEPARTMENTS table.
You execute the following command:
Which two statements are true?
Answer: A,C
NEW QUESTION # 366
Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEE_ID column is indexed.
Rows exist for employees 100 and 200.
Examine this statement:
Which two statements are true? (Choose two.)
Answer: C,D
NEW QUESTION # 367
......
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