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Oracle 1z0-071日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Working with Oracle Database SQL | 8% | - Describe the Oracle Database architecture - Start up and shut down a database - Explain the installation of Oracle Database software - Create a container database |
| Topic 2: Using Conversion Functions and Conditional Expressions | 10% | - Apply the NVL, NULLIF, and COALESCE functions to data - Describe implicit and explicit data type conversion - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Use conditional IF THEN ELSE logic in a SELECT statement |
| Topic 3: Using Set Operators | 5% | - Describe the order of precedence when the set operators are used - Describe set operators - Use a set operator to combine multiple queries into a single query |
| Topic 4: Reporting Aggregated Data Using Group Functions | 15% | - Describe the use of group functions - Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause - Identify the available group functions |
| Topic 5: Controlling User Access | 5% | - Distinguish between granting privileges and roles - Grant privileges on tables and on a view - Differentiate system privileges from object privileges |
| Topic 6: Using DDL Statements to Create and Manage Tables | 14% | - Alter table definitions - Categorize the main database objects - Describe the data types that are available for columns - Review the table structure - Create a simple table - Drop, rename, and truncate tables |
| Topic 7: Restricting and Sorting Data | 6% | - Use DEFINE and UNDEFINE commands - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query - Limit the rows that are retrieved by a query |
| Topic 8: Using Single-Row Functions to Customize Output | 10% | - Manipulate dates with the date functions - Perform arithmetic with date data - Describe the differences between single-row and multiple-row functions - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate numbers with the ROUND, TRUNC, and MOD functions |
| Topic 9: Manipulating Data | 14% | - Delete rows from a table - Control transactions - Describe each data manipulation language (DML) statement - Insert rows into a table - Update rows in a table |
| Topic 10: Using Subqueries to Solve Queries | 15% | - List the types of subqueries - Write single-row and multi-row subqueries - Describe the types of problems that subqueries can solve - Define subqueries |
| Topic 11: Creating Other Schema Objects | 10% | - Create, maintain, and use sequences - Create and maintain indexes - Create, modify, and retrieve data from a view - Create synonyms for database objects |
| Topic 12: Retrieving Data Using the SQL SELECT Statement | 5% | - Execute a basic SELECT statement - Differentiate between SQL statements and SQL*Plus commands - List the capabilities of SQL SELECT statements |
| Topic 13: Displaying Data from Multiple Tables Using Joins | 15% | - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - View data that does not meet a join condition by using outer joins - Join a table to itself by using a self-join - Cross join tables |
Oracle Database SQL (1z0-071日本語版) Sample Questions:
ORDERSテーブルには、ORDER_ID列に主キー制約が設定されています。
ORDER_ITEMSテーブルのORDER_ID列には、ORDERSテーブルの主キーを参照する外部キー制約が設定されています。
この制約は ON DELETE CASCADE で定義されています。
ORDERSテーブルには、ORDER_TOTALが1000未満の行が存在します。
どの3つのDELETE文が正常に実行されますか？
- A. 注文から削除します。
- B. 注文合計が 1000 未満の注文を削除します。
- C. order_id を orders から削除します。ただし、order_total が 1000 未満である必要があります。
- D. order_total < 1000 の orders テーブルから削除します。
- E. DELETE * FROM orders WHERE order_total < 1000;
Correct Answer: B,C 🗳️
制約条件に関して正しい記述はどれですか？(2つ選択してください。)
- A. テーブルには、主キーの一部として複数の列を含めることができます。
- B. 制約は、テーブルに対するINSERT操作に対してのみ適用されます。
- C. UNIQUE制約を持つ列にはNULL値を格納できます。
- D. 外部キーにはNULL値を含めることはできません。
Correct Answer: A,C 🗳️
展示資料を参照し、ORDER_ITEMS テーブルの構造を確認してください。
ORDER_ITEMS テーブル内のすべての注文の中で、合計金額が最も高い注文の ORDER_ID を選択する必要があります。
どのクエリを実行すれば、目的の結果が得られますか？
- A. SELECT order_id
FROM order_items
WHERE (unit_price*quantity) = (SELECT MAX(unit_price*quantity) FROM order_items GROUP BY order_id) - B. SELECT order_id
FROM order_items
WHERE(unit_price*quantity) = (SELECT MAX(unit_price*quantity) FROM order_items) GROUP BY order_id; - C. SELECT order_id
FROM order_items
WHERE(unit_price*quantity) = MAX(unit_price*quantity)
GROUP BY order_id; - D. SELECT order_id
FROM order_items
GROUP BY order_id
HAVING SUM(unit_price*quantity) = (SELECT MAX(SUM(unit_price*quantity)) FROM order_items GROUP BY order_id);
Correct Answer: D 🗳️
TRUNCATEとDELETEについて正しい記述はどれですか？(2つ選択してください。)
- A. TRUNCATE はテーブル上のすべてのインデックスを UNUSABLE 状態にします。
- B. TRUNCATE は WHERE 句を使用して、削除する行を決定できます。
- C. DELETE は WHERE 句を使用して、削除する行を指定できます。
- D. DELETE の結果は ROLLBACK を発行することで取り消すことができます。
- E. TRUNCATE の結果は ROLLBACK を発行することで元に戻すことができます。
Correct Answer: C,D 🗳️
インデックスに関して正しい記述はどれですか？(該当するものをすべて選択してください。)
- A. DML操作が実行されるたびに、対応するインデックスが自動的に更新されます。
- B. テーブル内の延期不可能な PRIMARY KEY または UNIQUE KEY 制約は、自動的に一意のインデックスを作成します。
- C. 式の一部として頻繁に参照される列にはインデックスを作成する必要があります。
- D. テーブルが削除されると、対応するインデックスも自動的に削除されます。
Correct Answer: A,B,D 🗳️
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