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| Section | Weight | Objectives |
|---|---|---|
| Using Single-Row Functions to Customize Output | 10% | - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Perform arithmetic with date data - Manipulate dates with the date functions - Describe the differences between single-row and multiple-row functions |
| Displaying Data from Multiple Tables Using Joins | 15% | - Cross join tables - View data that does not meet a join condition by using outer joins - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - Join a table to itself by using a self-join |
| Controlling User Access | 5% | - Grant privileges on tables and on a view - Distinguish between granting privileges and roles - Differentiate system privileges from object privileges |
| Using DDL Statements to Create and Manage Tables | 14% | - Categorize the main database objects - Describe the data types that are available for columns - Review the table structure - Alter table definitions - Drop, rename, and truncate tables - Create a simple table |
| Creating Other Schema Objects | 10% | - Create, maintain, and use sequences - Create synonyms for database objects - Create, modify, and retrieve data from a view - Create and maintain indexes |
| Using Subqueries to Solve Queries | 15% | - Define subqueries - List the types of subqueries - Describe the types of problems that subqueries can solve - Write single-row and multi-row subqueries |
| Manipulating Data | 14% | - Insert rows into a table - Control transactions - Describe each data manipulation language (DML) statement - Delete rows from a table - Update rows in a table |
| Using Set Operators | 5% | - Describe set operators - Use a set operator to combine multiple queries into a single query - Describe the order of precedence when the set operators are used |
| 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 |
| Reporting Aggregated Data Using Group Functions | 15% | - Describe the use of group functions - Identify the available group functions - Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause |
| 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 |
| 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 |
| Using Conversion Functions and Conditional Expressions | 10% | - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Apply the NVL, NULLIF, and COALESCE functions to data - Use conditional IF THEN ELSE logic in a SELECT statement - Describe implicit and explicit data type conversion |
このクエリを評価してください。
SQL> SELECT TRUNC(ROUND(156.00,-1),-1)
デュアルから;
結果はどうなるだろうか?
Correct Answer: B 🗳️
展示資料を参照し、プロモーション表の構造を調べてください。
プロモーション表を使用して、範囲内のすべてのプロモーションの平均コストを調べる必要があります。
カテゴリーAでは、0~2000ドルと2000~5000ドルが対象となります。
以下のSQL文を発行します。
結果はどうなるだろうか?
Correct Answer: D 🗳️
Explanation: Only visible for VCEPrep members. You can sign-up / login (it's free).
展示資料を閲覧し、部門別表の構造を調べてください。(2つ選択してください。)
このSQL文を調べてください。
SELECT department_id "DEPT_ID", department_name, 'b' FROM
部門
WHERE departments_id=90
連合
SELECT department_id, department_name DEPT_NAME, 'a' FROM
部門
where department_id=10
出力結果を並べ替えるために使用できる ORDER BY 句はどれですか?(2つ選択してください)
Correct Answer: A,D 🗳️
単一行関数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。)
Correct Answer: B,D 🗳️
Explanation: Only visible for VCEPrep members. You can sign-up / login (it's free).
どちらの2つが正常に実行されるでしょうか?(2つ選択してください。)
Correct Answer: A,C 🗳️
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