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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Single-Row Functions to Customize Output | 10% | - Describe the differences between single-row and multiple-row functions - Perform arithmetic with date data - Manipulate dates with the date functions - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate numbers with the ROUND, TRUNC, and MOD functions |
| Topic 2: Controlling User Access | 5% | - Grant privileges on tables and on a view - Differentiate system privileges from object privileges - Distinguish between granting privileges and roles |
| Topic 3: Using DDL Statements to Create and Manage Tables | 14% | - Review the table structure - Describe the data types that are available for columns - Alter table definitions - Categorize the main database objects - Create a simple table - Drop, rename, and truncate tables |
| Topic 4: Displaying Data from Multiple Tables Using Joins | 15% | - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - Cross join tables - Join a table to itself by using a self-join - View data that does not meet a join condition by using outer joins |
| Topic 5: Using Set Operators | 5% | - Use a set operator to combine multiple queries into a single query - Describe set operators - Describe the order of precedence when the set operators are used |
| Topic 6: Reporting Aggregated Data Using Group Functions | 15% | - Group data by using the GROUP BY clause - Identify the available group functions - Describe the use of group functions - Include or exclude grouped rows by using the HAVING clause |
| Topic 7: Retrieving Data Using the SQL SELECT Statement | 5% | - List the capabilities of SQL SELECT statements - Differentiate between SQL statements and SQL*Plus commands - Execute a basic SELECT statement |
| Topic 8: Working with Oracle Database SQL | 8% | - Explain the installation of Oracle Database software - Describe the Oracle Database architecture - Start up and shut down a database - Create a container database |
| Topic 9: Using Conversion Functions and Conditional Expressions | 10% | - Use conditional IF THEN ELSE logic in a SELECT statement - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Apply the NVL, NULLIF, and COALESCE functions to data - Describe implicit and explicit data type conversion |
| Topic 10: Restricting and Sorting Data | 6% | - Use DEFINE and UNDEFINE commands - Limit the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query |
| Topic 11: Manipulating Data | 14% | - Control transactions - Describe each data manipulation language (DML) statement - Delete rows from a table - Update rows in a table - Insert rows into a table |
| Topic 12: Using Subqueries to Solve Queries | 15% | - Define subqueries - List the types of subqueries - Write single-row and multi-row subqueries - Describe the types of problems that subqueries can solve |
| Topic 13: Creating Other Schema Objects | 10% | - Create synonyms for database objects - Create, modify, and retrieve data from a view - Create and maintain indexes - Create, maintain, and use sequences |
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。
次のSQL文を調べてください。
SELECT order_id, product_id, unit_price
注文アイテムから
ここで、単価 =
(SELECT MAX(unit_price)
注文アイテムから
order_idでグループ化する。
ORDER_IDごとに、UNIT_PRICEが最も高い製品のPRODUCT_IDを表示したい場合、上記のSQL文をどのように修正すればよいでしょうか?
Correct Answer: C 🗳️
グローバル一時テーブルについて正しい記述を3つ選びなさい。
Correct Answer: B,E,F 🗳️
ORDER BY句のデフォルトの動作に関して、正しい記述はどれですか?
Correct Answer: B 🗳️
Explanation: Only visible for Test4Sure members. You can sign-up / login (it's free).
EMPLOYEES テーブルの説明を確認してください。
部門90の各従業員について、以下を表示したい:
1. 彼らの姓
2. 雇用された完全な週数
出力は、勤続週数順に並べ替える必要があり、勤続期間が最も長い従業員から順に並べる必要があります。
どちらの文がこれを実現しますか?




Correct Answer: D 🗳️
展示資料をご覧になり、顧客テーブルの構造を調べてください。
CUSTOMER_VUは、CUSTOMERS_BR1テーブルに基づいたビューであり、CUSTOMERStableと同じ構造を持っています。
顧客情報は、顧客に関する最新情報を反映するように更新する必要があります。
以下のMERGEステートメントのエラーは何ですか?
Correct Answer: B 🗳️
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