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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using SET Operators | - UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations | |
| Topic 2: Managing Tables and Constraints | - Temporary and external tables - Constraints: primary key, foreign key, unique, check, not null - Data types, creating/altering/dropping tables | |
| Topic 3: Controlling User Access | - Roles, granting and revoking privileges - System and object privileges | |
| Topic 4: Managing Indexes, Synonyms and Sequences | - Create and use sequences - Create and maintain indexes - Create and use synonyms | |
| Topic 5: Displaying Data from Multiple Tables | 15% | - Equijoins and non-equijoins - Self-joins and outer joins - Cartesian products |
| Topic 6: Manipulating Data and Managing Transactions | - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - Multi-table inserts - INSERT, UPDATE, DELETE, MERGE statements | |
| Topic 7: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
| Topic 8: 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 9: Working with Time Zones and Date/Time Data | - Time zone conversion functions - TIMESTAMP, INTERVAL data types | |
| Topic 10: Relational Database Concepts | 10% | - ERD and SQL statement mapping - Theoretical and physical aspects of relational databases - Relationship between database and SQL |
| Topic 11: Using Subqueries to Solve Queries | - Single-row and multi-row subqueries - Correlated subqueries for update/delete | |
| Topic 12: Retrieving Data Using SQL SELECT Statement | 20% | - Arithmetic operations and NULL handling - Column aliases, concatenation, literals and DISTINCT - SELECT statement syntax and usage |
| Topic 13: Aggregating Data Using Group Functions | 10% | - SUM, AVG, COUNT, MAX, MIN functions - GROUP BY and HAVING clauses - Handling NULLs in group functions |
| Topic 14: Managing Views | - Updatable and read-only views - Create, modify and drop views | |
| Topic 15: Restricting and Sorting Data | 15% | - Operator precedence - WHERE clause and filtering conditions - Substitution variables, DEFINE and VERIFY commands - ORDER BY clause and sorting rules |
| Topic 16: Using Data Dictionary Views | - Retrieve metadata and object information |
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NEW QUESTION # 406
Examine the commands used to create DEPARTMENT_DETAILS and COURSE_DETAILS:
You want to generate a report that shows all course IDs irrespective of whether they have corresponding department IDs or not but no department IDs if they do not have any courses.
Which SQL statement must you use?
Answer: C
NEW QUESTION # 407
Examine the data in the COLORS table:
Examine the data in the BRICKS table:
Which two queries return all the rows from COLORS?
Answer: A,B
NEW QUESTION # 408
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,F
NEW QUESTION # 409
Which three tasks can be performed by DDL statements? (Choose three.)
Answer: B,C,E
NEW QUESTION # 410
You own table DEPARTMENTS, referenced by views, indexes, and synonyms.
Examine this command which executes successfully:
DROP TABLE departments PURGE;
Which three statements are true?
Answer: C,D,F
NEW QUESTION # 411
......
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