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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Conversion Functions and Conditional Expressions | 10% | - 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 - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions |
| Topic 2: Restricting and Sorting Data | 6% | - Limit the rows that are retrieved by a query - Sort the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime - Use DEFINE and UNDEFINE commands |
| Topic 3: Working with Oracle Database SQL | 8% | - Create a container database - Start up and shut down a database - Describe the Oracle Database architecture - Explain the installation of Oracle Database software |
| Topic 4: 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 |
| Topic 5: Using Single-Row Functions to Customize Output | 10% | - Manipulate dates with the date functions - Describe the differences between single-row and multiple-row functions - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Manipulate strings with character function in the SELECT and WHERE clauses - Perform arithmetic with date data |
| Topic 6: Using DDL Statements to Create and Manage Tables | 14% | - Drop, rename, and truncate tables - 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 |
| Topic 7: Using Subqueries to Solve Queries | 15% | - Describe the types of problems that subqueries can solve - List the types of subqueries - Write single-row and multi-row subqueries - Define subqueries |
| Topic 8: Manipulating Data | 14% | - Update rows in a table - Delete rows from a table - Insert rows into a table - Control transactions - Describe each data manipulation language (DML) statement |
| Topic 9: 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 10: 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 11: Displaying Data from Multiple Tables Using Joins | 15% | - Join a table to itself by using a self-join - 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 - Cross join tables |
| Topic 12: Reporting Aggregated Data Using Group Functions | 15% | - Include or exclude grouped rows by using the HAVING clause - Describe the use of group functions - Identify the available group functions - Group data by using the GROUP BY clause |
| Topic 13: Using Set Operators | 5% | - Use a set operator to combine multiple queries into a single query - Describe the order of precedence when the set operators are used - Describe set operators |
>> 1z1-071 Valid Exam Syllabus <<
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NEW QUESTION # 327 
Which two queries will result in an error?
Answer: B,E
NEW QUESTION # 328
Examine thestructure of the BOOKS_TRANSACTIONS table:
You want to display the member IDs, due date, and late fee as $2 for all transactions.
Which SQL statement must you execute? A)
B)
C)
D)
Answer: B
NEW QUESTION # 329
Examine the description of the EMPLOYEES table:
Examine this query:
Which line produces an error?
Answer: B
Explanation:
In the provided SQL query, the issue arises from the alias 'a.avg_sal' which is defined in the subquery but is being referenced in the SELECT list of the outer query. This is not permitted in SQL as the scope of the alias defined in the subquery is only within that subquery.
Here is the breakdown of the code and the error:
* Line 1: Correct syntax for initiating a SELECT statement.
* Line 2: Refers to 'e.salary', which is a correct reference to the 'salary' column using alias 'e' for the employees table.
* Line 3: 'a.avg_sal' attempts to reference an alias that is defined in the subquery within the outer query, which is not allowed. This is because 'avg_sal' is defined in the subquery's SELECT list and cannot be referenced outside of it. The correct way to include the average salary from the subquery in the SELECT list of the main query would be to repeat the subquery or to use a join that includes the average salary.
* Line 5-7: The subquery itself is correctly formed; it computes the average salary for the same department.
* Line 8: The ORDER BY clause is properly referencing 'e.last_name', which is defined in the outer query.
Therefore, the error occurs at Line 3 where 'a.avg_sal' is not a valid reference in the SELECT list of the main query because it is defined in the subquery.
The rules of scope for aliases in subqueries are specified in the Oracle Database SQL Language Reference 12c documentation. Subquery aliases cannot be referenced outside their subquery.
NEW QUESTION # 330
Which statements are correct regarding indexes? (Choose all that apply.)
Answer: A,B,C
Explanation:
Explanation
References:
http://viralpatel.net/blogs/understanding-primary-keypk-constraint-in-oracle/
NEW QUESTION # 331
Which three statements are true about the Oracle join and ANSI join syntax? (Choose three.)
Answer: B,E,G
Explanation:
http://www.dba-oracle.com/oracle_tips_iso99_joins.htm
NEW QUESTION # 332
......
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