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Database and Data Handling Quiz

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Questions and Answers

Which of the following statements about the SQLDataReader is correct?

SQLDataReader can read multiple rows and columns simultaneously.

SQLDataReader can write data back to the database.

SQLDataReader requires the connection to be open for reading. (correct)

SQLDataReader allows for asynchronous data retrieval.

What is the purpose of the Flush method in stream operations?

To reset the stream to its initial state.

To read data from the buffer without removing it.

To write any buffered data to the underlying device. (correct)

To close the stream and release resources.

In the context of exception handling, what is the role of the try/catch block?

To allow for simultaneous execution of multiple operations.

To execute a block of code without error checking.

To declare a variable and then initialize it later.

To handle exceptions and perform alternative actions when errors occur. (correct)

Which collection type is unordered and allows access to its elements via keys?

<p>Hashtable</p> Signup and view all the answers

What is the correct syntax for inserting a record into a database using SQLCommand?

<p>INSERT INTO table_name (column1, column2) VALUES (value1, value2);</p> Signup and view all the answers

Study Notes

Multiple Choice Questions (Part A)

15 items, worth 2 points each.
Topics include: IEnumerable, ICollection, IDictionary, SortedList, exceptions, and command object properties (Seek, Peek, Read, Flush).
Hashes (Hashtable, key/value pairs)
Data handling: Dataset, DataTable, DataColumn, DataRelation, DataColumnMapping, DataView
Database interactions: SQLDataReader, SQLCommand, Event Operator, SQLConnection
Assembly file extension.

Multiple Choice Questions (Part B)

15 items, worth 3 points each.
Topics cover database syntax:
- Retrieving/setting read timeouts
- Stream writer initialization
- Reading values (checking read access)
- Importing classes (accessing MS SQL Server)
- Thread instantiation
- Correct database connection code
- dequeue and enqueue
- SQL commands (insert into, update, delete, select)
- SQLParameter instantiation
- Stack instantiation
- Calling stored procedures
- Assigning threads
- try/catch blocks
- Database manipulation (delete, create commands)

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Description

Test your knowledge on database interactions, data handling, and various .NET collections through two parts of multiple-choice questions. Cover topics such as IEnumerable, ICollection, SQL commands, and error handling concepts. Perfect for those looking to strengthen their understanding of data management principles in programming.