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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Tables and Constraints | - Constraints: primary key, foreign key, unique, check, not null - Temporary and external tables - Data types, creating/altering/dropping tables | |
| Topic 2: Conversion Functions and Conditional Expressions | 10% | - Implicit and explicit data type conversion - TO_CHAR, TO_NUMBER, TO_DATE functions - NVL, NULLIF, COALESCE and CASE expressions |
| Topic 3: Using SET Operators | - UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations | |
| Topic 4: Restricting and Sorting Data | 15% | - Operator precedence - ORDER BY clause and sorting rules - WHERE clause and filtering conditions - Substitution variables, DEFINE and VERIFY commands |
| Topic 5: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 6: Retrieving Data Using SQL SELECT Statement | 20% | - Arithmetic operations and NULL handling - Column aliases, concatenation, literals and DISTINCT - SELECT statement syntax and usage |
| Topic 7: Displaying Data from Multiple Tables | 15% | - Cartesian products - Self-joins and outer joins - Equijoins and non-equijoins |
| Topic 8: Aggregating Data Using Group Functions | 10% | - SUM, AVG, COUNT, MAX, MIN functions - GROUP BY and HAVING clauses - Handling NULLs in group functions |
| Topic 9: Using Subqueries to Solve Queries | - Correlated subqueries for update/delete - Single-row and multi-row subqueries | |
| Topic 10: Managing Indexes, Synonyms and Sequences | - Create and use synonyms - Create and maintain indexes - Create and use sequences | |
| Topic 11: Using Single-Row Functions to Customize Output | 20% | - Character, number, and date functions - Nested functions usage |
| Topic 12: Controlling User Access | - System and object privileges - Roles, granting and revoking privileges | |
| Topic 13: Manipulating Data and Managing Transactions | - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - Multi-table inserts - INSERT, UPDATE, DELETE, MERGE statements | |
| Topic 14: Managing Views | - Create, modify and drop views - Updatable and read-only views | |
| Topic 15: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 16: Relational Database Concepts | 10% | - Theoretical and physical aspects of relational databases - Relationship between database and SQL - ERD and SQL statement mapping |
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NEW QUESTION # 274
Examine thee statements which execute successfully:
CREATE USER finance IDENTIFIED BY pwfin;
CREATE USER fin manager IDENTIETED BY pwmgr;
CREATE USER fin. Clerk IDENTIFIED BY pwclerk;
GRANT CREATE SESSON 20 finance, fin clerk;
GRANT SELECT ON scott. Emp To finance WITH GRANT OPTION;
CONNECT finance/pwfin
GRANT SELECT ON scott. emp To fin_ _clerk;
Which two are true?
Answer: A,D
NEW QUESTION # 275
Evaluate the following SELECTstatement and view the exhibit to examine its output:
SELECT constraint_name, constraint_type, search_condition,
r_constraint_name, delete_rule, status,
FROM user_constraints
WHERE table_name = 'ORDERS';
Which two statements are true about the output? (Choose two.)
Answer: A,C
NEW QUESTION # 276
View the Exhibit and examine the structure of the ORDER_ITEMS table.
You must select the ORDER_ID of the order that has the highest total value among all the orders in the ORDER_ITEMS table.
Which query would produce the desired result?
Answer: C
NEW QUESTION # 277
View the Exhibit and examine the details of PRODUCT_INFORMATIONtable.
PRODUCT_NAME
CATEGORY_ID SUPPLIER_ID
Inkjet C/8/HQ 12 102094
Inkjet C/4 12 102090
LaserPro 600/6/BW 12 102087
LaserPro 1200/8/BW 12 102099
Inkjet B/6 12 102096
Industrial 700/ID 12 102086
Industrial 600/DQ 12 102088
Compact 400/LQ 12 102087
Compact 400/DQ 12 102088
HD 12GB /R 13 102090
HD 10GB /I 13 102071
HD 12GB @7200 /SE 13 102057
HD 18.2GB @10000 /E 13 102078
HD 18.2GB @10000 /I 13 102050
HD 18GB /SE 13 102083
HD 6GB /I 13 102072
HD 8.2GB@5400 13 102093
You have the requirement to display PRODUCT_NAMEfrom the table where the CATEGORY_IDcolumn has values 12or 13, and the SUPPLIER_IDcolumn has the value 102088. You executed the following SQL statement:
SELECT product_name
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: B
NEW QUESTION # 278
Examine the description of the PRODUCT_STATUS table:
The STATUS column contains the values 'IN STOCK' or 'OUT OF STOCK' for each row.
Which two queries will execute successfully?
Answer: A,B
NEW QUESTION # 279
......
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