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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: Retrieving Data Using SQL SELECT Statement | 20% | - SELECT statement syntax and usage - Arithmetic operations and NULL handling - Column aliases, concatenation, literals and DISTINCT |
| Topic 3: Relational Database Concepts | 10% | - ERD and SQL statement mapping - Relationship between database and SQL - Theoretical and physical aspects of relational databases |
| Topic 4: Using Subqueries to Solve Queries | - Single-row and multi-row subqueries - Correlated subqueries for update/delete | |
| Topic 5: Displaying Data from Multiple Tables | 15% | - Cartesian products - Equijoins and non-equijoins - Self-joins and outer joins |
| Topic 6: Using SET Operators | - Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators | |
| Topic 7: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 8: Controlling User Access | - System and object privileges - Roles, granting and revoking privileges | |
| Topic 9: Managing Views | - Updatable and read-only views - Create, modify and drop views | |
| Topic 10: Manipulating Data and Managing Transactions | - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - INSERT, UPDATE, DELETE, MERGE statements - Multi-table inserts | |
| Topic 11: Conversion Functions and Conditional Expressions | 10% | - NVL, NULLIF, COALESCE and CASE expressions - TO_CHAR, TO_NUMBER, TO_DATE functions - Implicit and explicit data type conversion |
| Topic 12: Managing Indexes, Synonyms and Sequences | - Create and maintain indexes - Create and use synonyms - Create and use sequences | |
| Topic 13: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
| Topic 14: Restricting and Sorting Data | 15% | - Substitution variables, DEFINE and VERIFY commands - Operator precedence - WHERE clause and filtering conditions - ORDER BY clause and sorting rules |
| Topic 15: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 16: Aggregating Data Using Group Functions | 10% | - Handling NULLs in group functions - SUM, AVG, COUNT, MAX, MIN functions - GROUP BY and HAVING clauses |
>> Relevant 1z0-071 Answers <<
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NEW QUESTION # 316
The first DROP operation is performed on PRODUCTS table using the following command:
DROP TABLE products PURGE;
Then you performed the FLASHBACK operation by using the following command:
FLASHBACK TABLE products TO BEFORE DROP;
Which statement describes the outcome of the FLASHBACK command?
Answer: C
Explanation:
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_9003.htm
NEW QUESTION # 317
Which two statements are true? (Choose two.)
Answer: C,E
Explanation:
* A. The USER SYNONYMS view can provide information about private synonyms: This view contains information about private synonyms that have been created by the user. It lists all synonyms that are accessible to the user in their schema.
* E. DICTIONARY is a view that contains the names of all the data dictionary views that the user
* can access: This view lists the names of all data dictionary views available to the user, providing a directory of useful database metadata.
Incorrect options:
* B: The SYSTEM user does not own all base tables of the data dictionary; some are owned by SYS.
* C: Not all users have access to dynamic performance views prefixed with V$; access is restricted based on privileges.
* D: The USER_OBJECTS view lists all objects owned by the user, not just tables and views but also other types of schema objects like procedures and functions.
NEW QUESTION # 318
View the exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTS and TIMES tables.
The PROD_ID column is the foreign key in the SALES table referencing the PRODUCTS table.
The CUST_ID and TIME_ID columns are also foreign keys in the SALES table referencing the CUSTOMERS and TIMES tables, respectively.
Examine this command:
CREATE TABLE new_sales (prod_id, cust_id, order_date DEFAULT SYSDATE)
AS
SELECT prod_id, cust_id, time_id
FROM sales;
Which statement is true?
Answer: D
NEW QUESTION # 319
Evaluate the following SQL commands:
The command to create a table fails. Identify the reason for the SQL statement failure.
Answer: C
NEW QUESTION # 320
View the Exhibit and examine the data in ORDERS_MASTER and MONTHLYjDRDERS tables.
Evaluate the following MERGE statement:
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: A
NEW QUESTION # 321
......
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