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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Views | - Updatable and read-only views - Create, modify and drop views | |
| Topic 2: Manipulating Data and Managing Transactions | - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - Multi-table inserts - INSERT, UPDATE, DELETE, MERGE statements | |
| Topic 3: Conversion Functions and Conditional Expressions | 10% | - NVL, NULLIF, COALESCE and CASE expressions - Implicit and explicit data type conversion - TO_CHAR, TO_NUMBER, TO_DATE functions |
| Topic 4: Managing Tables and Constraints | - Temporary and external tables - Data types, creating/altering/dropping tables - Constraints: primary key, foreign key, unique, check, not null | |
| Topic 5: Using Single-Row Functions to Customize Output | 20% | - Character, number, and date functions - Nested functions usage |
| Topic 6: Using Subqueries to Solve Queries | - Correlated subqueries for update/delete - Single-row and multi-row subqueries | |
| Topic 7: Retrieving Data Using SQL SELECT Statement | 20% | - Arithmetic operations and NULL handling - SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT |
| Topic 8: Displaying Data from Multiple Tables | 15% | - Equijoins and non-equijoins - Cartesian products - Self-joins and outer joins |
| Topic 9: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 10: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 11: Aggregating Data Using Group Functions | 10% | - Handling NULLs in group functions - GROUP BY and HAVING clauses - SUM, AVG, COUNT, MAX, MIN functions |
| Topic 12: Relational Database Concepts | 10% | - Relationship between database and SQL - ERD and SQL statement mapping - Theoretical and physical aspects of relational databases |
| Topic 13: Restricting and Sorting Data | 15% | - WHERE clause and filtering conditions - ORDER BY clause and sorting rules - Operator precedence - Substitution variables, DEFINE and VERIFY commands |
| Topic 14: Managing Indexes, Synonyms and Sequences | - Create and use synonyms - Create and use sequences - Create and maintain indexes | |
| Topic 15: Using SET Operators | - UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations | |
| Topic 16: Controlling User Access | - Roles, granting and revoking privileges - System and object privileges |
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NEW QUESTION # 428
View the Exhibit and examine the structure of the SALESand PRODUCTStables. (Choose two.)
In the SALEStable, PROD_ID is the foreign key referencing PROD_ID in the PRODUCTS table. You must list each product ID and the number of times it has been sold.
Examine this query which is missing a JOINoperator:
Which two JOINoperations can be used to obtain the required output? (Choose two.)
Answer: A,B
NEW QUESTION # 429
Which statement is true regarding the INTERSECToperator?
Answer: C
Explanation:
Explanation/Reference:
Explanation:
INTERSECT Returns only the rows that occur in both queries' result sets, sorting them and removing duplicates.
The columns in the queries that make up a compound query can have different names, but the output result set will use the names of the columns in the first query.
NEW QUESTION # 430
In which three situations does a transaction complete?
Answer: B,D,E
Explanation:
Explanation
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/transact.htm
NEW QUESTION # 431
The user SCOTTwho is the owner of ORDERSand ORDER_ITEMStables issues the following GRANT command:
GRANT ALL
ON orders, order_items
TO PUBLIC;
What correction needs to be done to the above statement?
Answer: C
Explanation:
Explanation/Reference:
References:
http://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqljgrant.html
NEW QUESTION # 432
Examine the data in the EMPLOYEES table:
Which statement will compute the total annual compensation for each employee?
Answer: C
NEW QUESTION # 433
......
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