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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Views | - Updatable and read-only views - Create, modify and drop views | |
| Topic 2: Restricting and Sorting Data | 15% | - Substitution variables, DEFINE and VERIFY commands - Operator precedence - ORDER BY clause and sorting rules - WHERE clause and filtering conditions |
| Topic 3: Manipulating Data and Managing Transactions | - INSERT, UPDATE, DELETE, MERGE statements - Multi-table inserts - Transaction control: COMMIT, ROLLBACK, SAVEPOINT | |
| Topic 4: Using SET Operators | - Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators | |
| Topic 5: Managing Tables and Constraints | - Constraints: primary key, foreign key, unique, check, not null - Data types, creating/altering/dropping tables - Temporary and external tables | |
| Topic 6: Managing Indexes, Synonyms and Sequences | - Create and use sequences - Create and use synonyms - Create and maintain indexes | |
| Topic 7: Aggregating Data Using Group Functions | 10% | - SUM, AVG, COUNT, MAX, MIN functions - GROUP BY and HAVING clauses - Handling NULLs in group functions |
| Topic 8: Using Subqueries to Solve Queries | - Correlated subqueries for update/delete - Single-row and multi-row subqueries | |
| Topic 9: 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 10: Working with Time Zones and Date/Time Data | - Time zone conversion functions - TIMESTAMP, INTERVAL data types | |
| Topic 11: Using Data Dictionary Views | - Retrieve metadata and object information | |
| 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: Displaying Data from Multiple Tables | 15% | - Equijoins and non-equijoins - Self-joins and outer joins - Cartesian products |
| Topic 14: Controlling User Access | - Roles, granting and revoking privileges - System and object privileges | |
| Topic 15: Retrieving Data Using SQL SELECT Statement | 20% | - SELECT statement syntax and usage - Arithmetic operations and NULL handling - Column aliases, concatenation, literals and DISTINCT |
| Topic 16: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
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NEW QUESTION # 341
View the Exhibit and examine the structure of ORDERS and CUSTOMERS tables.
(Choose the best answer.)
You executed this UPDATE statement:
UPDATE
( SELECT order_date, order_total, customer_id FROM orders)
Set order_date = '22-mar-2007'
WHERE customer_id IN
(SELECT customer_id FROM customers
WHERE cust_last_name = 'Roberts' AND credit_limit = 600);
Which statement is true regarding the execution?
Answer: A
NEW QUESTION # 342
The INVOICEtable has a QTY_SOLDcolumn of data type NUMBERand an INVOICE_DATE column of data type DATE.
NLS_DATE_FORMATis set to DD-MON-RR.
Which two are true about data type conversions involving these columns in query expressions?
(Choose two.)
Answer: A,E
NEW QUESTION # 343
View the Exhibit and examine the details of the PRODUCT_INFORMATION table.
You have the requirement to display PRODUCT_NAME and LIST_PRICE from the table where the CATEGORYJD column has values 12 or 13, and the SUPPLIER_ID column has the value 102088. You executed the following SQL statement:
SELECT product_name, list_price
FROM product_information
WHERE (category_id = 12 AND category_id = 13) AND supplier_id = 102088; Which statement is true regarding the execution of the query?
Answer: D
NEW QUESTION # 344
Examine the structure of the MEMBERS table.
NameNull?Type
------------------------------------------------------------
MEMBER_IDNOT NULLVARCHAR2 (6)
FIRST_NAMEVARCHAR2 (50)
LAST_NAMENOT NULLVARCHAR2 (50)
ADDRESSVARCHAR2 (50)
CITYVARCHAR2 (25)
STATENOT NULL VARCHAR2 (3)
Which query can be used to display the last names and city names only for members from the states MO and MI?
Answer: D
NEW QUESTION # 345
Which two are true about granting privileges on objects? (Choose two.)
Answer: B,C
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/network.102/b14266/authoriz.htm#i1008214
NEW QUESTION # 346
......
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