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Oracle 1z0-071日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Tables and Constraints | - Data types, creating/altering/dropping tables - Constraints: primary key, foreign key, unique, check, not null - Temporary and external tables | |
| Topic 2: Using SET Operators | - UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations | |
| Topic 3: Controlling User Access | - Roles, granting and revoking privileges - System and object privileges | |
| Topic 4: Managing Indexes, Synonyms and Sequences | - Create and use sequences - Create and maintain indexes - Create and use synonyms | |
| Topic 5: Displaying Data from Multiple Tables | 15% | - Equijoins and non-equijoins - Cartesian products - Self-joins and outer joins |
| Topic 6: Relational Database Concepts | 10% | - Theoretical and physical aspects of relational databases - Relationship between database and SQL - ERD and SQL statement mapping |
| Topic 7: Restricting and Sorting Data | 15% | - WHERE clause and filtering conditions - Operator precedence - Substitution variables, DEFINE and VERIFY commands - ORDER BY clause and sorting rules |
| Topic 8: Using Subqueries to Solve Queries | - Single-row and multi-row subqueries - Correlated subqueries for update/delete | |
| Topic 9: Retrieving Data Using SQL SELECT Statement | 20% | - SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT - Arithmetic operations and NULL handling |
| Topic 10: Aggregating Data Using Group Functions | 10% | - Handling NULLs in group functions - GROUP BY and HAVING clauses - SUM, AVG, COUNT, MAX, MIN functions |
| Topic 11: Working with Time Zones and Date/Time Data | - TIMESTAMP, INTERVAL data types - Time zone conversion functions | |
| Topic 12: Conversion Functions and Conditional Expressions | 10% | - Implicit and explicit data type conversion - NVL, NULLIF, COALESCE and CASE expressions - TO_CHAR, TO_NUMBER, TO_DATE functions |
| Topic 13: Using Single-Row Functions to Customize Output | 20% | - Nested functions usage - Character, number, and date functions |
| Topic 14: Managing Views | - Create, modify and drop views - Updatable and read-only views | |
| Topic 15: Manipulating Data and Managing Transactions | - Multi-table inserts - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - INSERT, UPDATE, DELETE, MERGE statements | |
| Topic 16: Using Data Dictionary Views | - Retrieve metadata and object information |
Oracle Database SQL (1z0-071日本語版) Sample Questions:
リレーショナルデータベースにおけるテーブル間の関係を定義することについて、正しい記述を3つ挙げてください。
(3つ選択してください。)
- A. 一意キー列はNULL値を許容します。
- B. すべての主キーまたは一意キーの値は、対応する外部キーの値を参照する必要があります。
- C. すべての外部キー値は、対応する主キーまたは一意キー値を参照する必要があります。
- D. 主キー列はNULL値を許容します。
- E. 外部キー列はNULL値を許容します。
Correct Answer: C,D 🗳️
EMPLOYEES テーブルの説明を確認してください。
エラーが発生するクエリはどれですか?(2つ選択してください。)
- A.

- B.

- C.

- D.

- E.

- F.

Correct Answer: B,E 🗳️
PRODUCTSテーブルの説明を確認してください。
このコマンドは正常に実行されました。
エラーなく実行されるステートメントはどれですか?(2つ選択してください。)
- A.

- B.

- C.

- D.

Correct Answer: C 🗳️
展示資料をご覧になり、売上表の構造を調べてください。
以下のクエリは、販売数が55,000個を超え、かつ注文回数が10回を超えるすべての製品IDをSALESテーブルから取得するために作成されています。
SQL> SELECT prod_id
販売から
販売数量が55000以上かつカウント(*)が10以上の場合
prod_idでグループ化
カウント(*) > 10 である;
このSQL文に関して、正しい記述はどれですか?
- A. COUNT(*) は HAVING 句にのみ使用でき、WHERE 句には使用できないため、エラーが発生します。
- B. 正常に実行され、必要な結果が生成されます。
- C. 実行は成功しますが、COUNT(*) の代わりに COUNT(prod_id) を使用する必要があるため、結果は生成されません。
- D. COUNT(*) は SELECT 句でも指定する必要があるため、エラーが発生します。
Correct Answer: A 🗳️
CUSTOMERSテーブルのCUST_NAME列のデータを調べてください。
姓が Mc または MC で始まる CUST_NAME の値を表示したい。
必要な結果を得るには、どの2つのWHERE句を使用すればよいですか?(2つ選択してください。)
- A. WHERE UPPER (SUBSTR (cust_name, INSTR(cust_name, `')+1)) LIKE UPPER (`MC%')
- B. WHERE SUBSTR (cust_name, INSTR (cust_name, `') +1) LIKE `Mc%'
- C. WHERE INITCAP (SUBSTR (cust_name, INSTR(cust_name, `')+1)) LIKE `Mc%'
- D. WHERE INITCAP (SUBSTR (cust_name, INSTR(cust_name, `')+1)) IN (`MC%', `Mc%)
- E. WHERE SUBSTR (cust_name, INSTR (cust_name, `') +1) LIKE `Mc%' OR `MC%'
Correct Answer: B,E 🗳️
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