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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables | 15% | - Self-joins and outer joins - Equijoins and non-equijoins - Cartesian products |
| Topic 2: Managing Indexes, Synonyms and Sequences | - Create and use sequences - Create and use synonyms - Create and maintain indexes | |
| Topic 3: Conversion Functions and Conditional Expressions | 10% | - NVL, NULLIF, COALESCE and CASE expressions - Implicit and explicit data type conversion - TO_CHAR, TO_NUMBER, TO_DATE functions |
| Topic 4: Managing Views | - Updatable and read-only views - Create, modify and drop views | |
| Topic 5: Controlling User Access | - System and object privileges - Roles, granting and revoking privileges | |
| Topic 6: Using SET Operators | - Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators | |
| Topic 7: Retrieving Data Using SQL SELECT Statement | 20% | - Arithmetic operations and NULL handling - SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT |
| Topic 8: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 9: Using Data Dictionary Views | - Retrieve metadata and object information | |
| Topic 10: Restricting and Sorting Data | 15% | - Operator precedence - WHERE clause and filtering conditions - ORDER BY clause and sorting rules - Substitution variables, DEFINE and VERIFY commands |
| Topic 11: Managing Tables and Constraints | - Constraints: primary key, foreign key, unique, check, not null - Data types, creating/altering/dropping tables - Temporary and external tables | |
| Topic 12: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
| Topic 13: Manipulating Data and Managing Transactions | - INSERT, UPDATE, DELETE, MERGE statements - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - Multi-table inserts | |
| Topic 14: Using Subqueries to Solve Queries | - Correlated subqueries for update/delete - Single-row and multi-row subqueries | |
| Topic 15: Aggregating Data Using Group Functions | 10% | - GROUP BY and HAVING clauses - Handling NULLs in group functions - SUM, AVG, COUNT, MAX, MIN functions |
| Topic 16: Relational Database Concepts | 10% | - Relationship between database and SQL - Theoretical and physical aspects of relational databases - ERD and SQL statement mapping |
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NEW QUESTION # 239
Which CREATE TABLE statement is valid?
Answer: C
NEW QUESTION # 240
Examine the data in the CUST_NAME column of the CUSTOMERS table.
CUST_NAME
-------------------
Renske Ladwig
Jason Mallin
Samuel McCain
Allan MCEwen
Irene Mikilineni
Julia Nayer
You need to display customers' second names where the second name starts with "Mc" or
"MC".
Which query gives the required output?
Answer: D
NEW QUESTION # 241
Examine the structure of the PROMOTIONS table: (Choose the best answer.)
Management requires a report of unique promotion costs in each promotion category.
Which query would satisfy this requirement?
Answer: D
NEW QUESTION # 242
View the Exhibit and examine the structure of ORDER_ITEMS and ORDERS tables.
You need to remove from the ORDER_ITEMS table those rows that have an order status of 0 or 1 in the ORDERS table.
Which two DELETE statements are valid (Choose two.)
Answer: B,C
NEW QUESTION # 243
View and Exhibit and examine the structure and data in the INVOICE table.
Which two statements are true regarding data type conversion in query expressions? (Choose two.)
Answer: D,E
NEW QUESTION # 244
......
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