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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Views | - Create, modify and drop views - Updatable and read-only views | |
| Topic 2: Manipulating Data and Managing Transactions | - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - INSERT, UPDATE, DELETE, MERGE statements - Multi-table inserts | |
| Topic 3: Restricting and Sorting Data | 15% | - Substitution variables, DEFINE and VERIFY commands - WHERE clause and filtering conditions - Operator precedence - ORDER BY clause and sorting rules |
| Topic 4: Conversion Functions and Conditional Expressions | 10% | - TO_CHAR, TO_NUMBER, TO_DATE functions - NVL, NULLIF, COALESCE and CASE expressions - Implicit and explicit data type conversion |
| Topic 5: Managing Tables and Constraints | - Data types, creating/altering/dropping tables - Temporary and external tables - Constraints: primary key, foreign key, unique, check, not null | |
| Topic 6: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 7: Using SET Operators | - Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators | |
| Topic 8: Using Subqueries to Solve Queries | - Single-row and multi-row subqueries - Correlated subqueries for update/delete | |
| Topic 9: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 10: Retrieving Data Using SQL SELECT Statement | 20% | - Arithmetic operations and NULL handling - Column aliases, concatenation, literals and DISTINCT - SELECT statement syntax and usage |
| Topic 11: Relational Database Concepts | 10% | - ERD and SQL statement mapping - Relationship between database and SQL - Theoretical and physical aspects of relational databases |
| Topic 12: Displaying Data from Multiple Tables | 15% | - Self-joins and outer joins - Equijoins and non-equijoins - Cartesian products |
| Topic 13: Controlling User Access | - Roles, granting and revoking privileges - System and object privileges | |
| Topic 14: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
| Topic 15: Aggregating Data Using Group Functions | 10% | - SUM, AVG, COUNT, MAX, MIN functions - Handling NULLs in group functions - GROUP BY and HAVING clauses |
| Topic 16: Managing Indexes, Synonyms and Sequences | - Create and use sequences - Create and use synonyms - Create and maintain indexes |
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NEW QUESTION # 163
Which two statements are true about Oracle synonyms? (Choose two.)
Answer: B,C
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_7001.htm
NEW QUESTION # 164
Sales data of a company is stored in two tables, SALES1and SALES2, with some data being duplicated across the tables. You want to display the results from the SALES1table, which are not present in the SALES2table.
Which set operator generates the required output?
INTERSECT
Answer: C
Explanation:
Explanation/Reference:
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/queries004.htm
NEW QUESTION # 165
The CUSTOMERS table has a CUST_CREDIT_LIMIT column of data type NUMBER.
Which two queries execute successfully? (Choose two.)
Answer: B,D
NEW QUESTION # 166
View the Exhibit and examine the details of the ORDER_ITEMS table.
Evaluate the following SQL statements:
Statement 1:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items;
Statement 2:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items
GROUP BY order_id;
Which statements are true regarding the output of these SQL statements? (Choose all that apply.)
Answer: A,C,E
NEW QUESTION # 167
View the exhibit and examine the data in ORDERS_MASTERand MONTHLY_ORDERStables.
Evaluate the following MERGEstatement:
MERGE_INTO orders_master o
USING monthly_orders m
ON (o.order_id = m.order_id)
WHEN MATCHED THEN
UPDATE SET o.order_total = m.order_total
DELETE WHERE (m.order_total IS NULL)
WHEN NOT MATCHED THEN
INSERT VALUES (m.order_id, m.order_total)
What would be the outcome of the above statement?
Answer: B
Explanation:
Explanation/Reference:
References:
https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9016.htm
NEW QUESTION # 168
......
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