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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using SET Operators | - UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations | |
| Topic 2: Managing Indexes, Synonyms and Sequences | - Create and maintain indexes - Create and use synonyms - Create and use sequences | |
| Topic 3: Aggregating Data Using Group Functions | 10% | - SUM, AVG, COUNT, MAX, MIN functions - GROUP BY and HAVING clauses - Handling NULLs in group functions |
| Topic 4: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 5: Manipulating Data and Managing Transactions | - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - Multi-table inserts - INSERT, UPDATE, DELETE, MERGE statements | |
| Topic 6: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
| Topic 7: Relational Database Concepts | 10% | - ERD and SQL statement mapping - Relationship between database and SQL - Theoretical and physical aspects of relational databases |
| Topic 8: Restricting and Sorting Data | 15% | - Operator precedence - Substitution variables, DEFINE and VERIFY commands - ORDER BY clause and sorting rules - WHERE clause and filtering conditions |
| Topic 9: Managing Views | - Create, modify and drop views - Updatable and read-only views | |
| Topic 10: Controlling User Access | - Roles, granting and revoking privileges - System and object privileges | |
| Topic 11: 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 12: Retrieving Data Using SQL SELECT Statement | 20% | - SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT - Arithmetic operations and NULL handling |
| Topic 13: Managing Tables and Constraints | - Data types, creating/altering/dropping tables - Temporary and external tables - Constraints: primary key, foreign key, unique, check, not null | |
| Topic 14: Using Subqueries to Solve Queries | - Single-row and multi-row subqueries - Correlated subqueries for update/delete | |
| Topic 15: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 16: Displaying Data from Multiple Tables | 15% | - Self-joins and outer joins - Equijoins and non-equijoins - Cartesian products |
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NEW QUESTION # 141
Which three statements are true about dropping and unused columns in an Oracle database?
Answer: C,E,F
NEW QUESTION # 142
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.) FULL OUTER JOIN
Answer: B,D
NEW QUESTION # 143
Examine this description of the PRODUCTS table:
You successfully execute this command:
Which two statements execute without errors?
Answer: A
NEW QUESTION # 144
View the exhibit and examine the structure of the STORES table.
STORES table
NameNull?Type
---------------------- -------------
STORE_IDNUMBER
NAMEVARCHAR2(100)
ADDRESSVARCHAR2(200)
CITYVARCHAR2(100)
COUNTRYVARCHAR2(100)
START_DATEDATE
END_DATEDATE
PROPERTY_PRICENUMBER
You want to display the NAME of the store along with the ADDRESS, START_DATE, PROPERTY_PRICE, and the projected property price, which is 115% of property price.
The stores displayed must have START_DATE in the range of 36 months starting from 01- Jan-2000 and above.
Which SQL statement would get the desired output?
Answer: D
NEW QUESTION # 145
View the Exhibit and examine the description of the tables.
You execute this SQL statement:
Which three statements are true?
Answer: C,E,F
NEW QUESTION # 146
......
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