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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables | 15% | - Cartesian products - Equijoins and non-equijoins - Self-joins and outer joins |
| 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: Relational Database Concepts | 10% | - Relationship between database and SQL - Theoretical and physical aspects of relational databases - ERD and SQL statement mapping |
| Topic 5: Using Subqueries to Solve Queries | - Single-row and multi-row subqueries - Correlated subqueries for update/delete | |
| Topic 6: Manipulating Data and Managing Transactions | - Multi-table inserts - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - INSERT, UPDATE, DELETE, MERGE statements | |
| Topic 7: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 8: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 9: Using Single-Row Functions to Customize Output | 20% | - Character, number, and date functions - Nested functions usage |
| Topic 10: Aggregating Data Using Group Functions | 10% | - Handling NULLs in group functions - GROUP BY and HAVING clauses - SUM, AVG, COUNT, MAX, MIN functions |
| Topic 11: Using SET Operators | - Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators | |
| Topic 12: Managing Views | - Updatable and read-only views - Create, modify and drop views | |
| Topic 13: Restricting and Sorting Data | 15% | - ORDER BY clause and sorting rules - Operator precedence - WHERE clause and filtering conditions - Substitution variables, DEFINE and VERIFY commands |
| Topic 14: Conversion Functions and Conditional Expressions | 10% | - Implicit and explicit data type conversion - NVL, NULLIF, COALESCE and CASE expressions - TO_CHAR, TO_NUMBER, TO_DATE functions |
| Topic 15: Managing Indexes, Synonyms and Sequences | - Create and use synonyms - Create and maintain indexes - Create and use sequences | |
| Topic 16: Retrieving Data Using SQL SELECT Statement | 20% | - Arithmetic operations and NULL handling - Column aliases, concatenation, literals and DISTINCT - SELECT statement syntax and usage |
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NEW QUESTION # 162
Examine these statements which execute successfully:
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYY HH24 :MT:SS;'
ALTER SESSION SET TIME-ZONE = '-5:00;:
Examine the result:
If LOCALTIMESTAMP was selected at the same time, what would it return?
Answer: A
NEW QUESTION # 163
Examine these statements executed in a single Oracle session:
CREATE TABLE product (pcode NUMBER(2),pname VARCHAR2(20));
INSERT INTO product VALUES(1,'pen');
INSERT INTO product VALUES (2,'pencil');
INSERT INTO product VALUES(3,'fountain pen');
SAVEPOINT a;
UPDATE product SET pcode=10 WHERE pcode =1;
COMMIT;
DELETE FROM product WHERE pcode =2;
SAVEPOINT b;
UPDATE product SET pcode=30 WHERE pcode =3;
SAVEPOINT c;
DELETE FROM product WHERE pcode =10;
ROLLBACK TO SAVEPOINT b;
COMMIT;
Which three statements are true
Answer: A,D,F
Explanation:
* After creation and initial inserts, the pcode for 'pen' is updated to 10, and then committed.
* The 'pencil' row is deleted and not yet committed.
* A savepoint b is set after the deletion of the 'pencil' row.
* The 'fountain pen' pcode is updated to 30, followed by setting savepoint c.
* The 'pen' row (now with pcode 10) is deleted.
* A rollback to savepoint b reverts the deletion of 'pen' and the update to 'fountain pen', but not the deletion of 'pencil', which was committed earlier due to the scope of the savepoint.
* Therefore, after the final commit:
* A: The code for 'pen' is 10, since the update was committed and the subsequent delete was rolled back.
* C: There is no row containing 'pencil' because its deletion was committed.
* F: There is a row containing 'pen' because the deletion was rolled back to savepoint b which was set after the deletion of 'pencil'.
NEW QUESTION # 164
Which CREATE TABLE statement is valid?
Answer: C
NEW QUESTION # 165
View the Exhibit and examine the structure of the ORDERS table.
You must select ORDER_ID and ORDER_DATE for all orders that were placed after the last order placed by CUSTOMER_ID 101.
Which query would give you the desired result?
Answer: A
Explanation:
Explanation
NEW QUESTION # 166
Which two statements are true about Oracle synonyms? (Choose two.)
Answer: D,E
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_7001.htm
NEW QUESTION # 167
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