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| Section | Weight | Objectives |
|---|---|---|
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Using Functions | 25% | - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Restricting group results - ROUND, TRUNC, MOD functions - Group functions and grouping data - Data type conversion: implicit and explicit |
| Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Sorting query results - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Operator precedence rules - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| DDL for Tables and Relationships | 15% | - Views management - Drop columns, set unused columns - TRUNCATE TABLE statement - Constraints management - Temporary and external tables - CREATE TABLE statement - Table structure, columns, data types |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
因為Oracle技術一直在快速發展，所以1Z0-171認證考試的試題也在不斷變化。因此， Fast2test的考古題也在一直更新。並且，如果你購買了Fast2test的資料，Fast2test將為你提供一年的免費更新服務。只要試題一更新，Fast2test馬上把最新版的資料發送給你。這樣就可以保證你隨時擁有最新版的資料。Fast2test不僅可以幫助你通過考試，還可以幫助你學習最新的知識。这样实惠的资料你千万不要错过。
問題 #90
What is the result of the following SQL query?
SELECT COALESCE(NULL, 100, 200) AS result FROM dual;
答案：A
問題 #91
Which data dictionary view lists all indexes created by the current user?
答案：D
問題 #92
Which type of subquery returns exactly one value?
答案：C
問題 #93
Which SET operator returns rows from the first query that are not present in the second query?
答案：D
問題 #94
What is the result of using the following SQL query?
SELECT 100 + NULL AS result;
答案：C
問題 #95
......
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1Z0-171測試題庫: https://tw.fast2test.com/1Z0-171-premium-file.html