Need These Two Done Within 2 Hours

Need These Two Done Within 2 Hoursquestion 3515ptstco 5 6 9 Discu

Need these two done within 2 hours. Question 3515 pts (TCO 5, 6, 9) Discuss the importance of implementing transactions in web applications. Describe the COMMIT, and ROLLBACK command. In the following SaveEmployee function below, add code to insert the first name, last name, and pay rate into the tblEmployee table. In the database, the column names are: FirstName, LastName, PayRate.

Also, write the code to commit the transaction. public static bool SaveEmployee(string Database, string FirstName, string LastName, string PayRate) { bool recordSaved; try { OleDbTransaction myTransaction = null; OleDbConnection conn = new OleDbConnection("PROVIDER=Microsoft.ACE.OLEDB.12.0;" +"Data Source=" +Database); conn.Open(); OleDbCommand command = conn.CreateCommand(); string strSQL; myTransaction = conn.BeginTransaction(); command.Transaction = myTransaction; _____________________________________________________ // Add your comments here command.CommandType = CommandType.Text; command.CommandText = strSQL; // Add your comments here command.ExecuteNonQuery(); // Write the code below to commit the transaction _______________________________________________________ // Add your comments here conn.Close(); recordSaved = true; } catch (Exception ex) { myTransaction.Rollback(); recordSaved = false; } return recordSaved; } HTML Editor Keyboard Shortcuts 12pt Paragraph p Flag this Question Question 3615 pts (TCO 8, 9) Explain Secure Sockets Layer, authentication, and authorization. Discuss advantages of using validation controls and discuss the RequiredFieldValidator and the RegularExpressionValidator in particular. HTML Editor Keyboard Shortcuts 12pt Paragraph

Paper For Above instruction

Implementing transactions in web applications is a critical aspect of ensuring data integrity and consistency during operations that involve multiple steps. Transactions allow multiple database operations to be executed as a single unit of work, ensuring that either all operations are successfully completed or none are applied, thereby preventing partial updates that could corrupt the database state. This atomicity is fundamental in multi-step processes such as banking transactions, order processing, or employee data management.

The importance of transactions becomes evident in scenarios where multiple related changes need to be committed simultaneously. For example, when updating account balances in banking systems, a failure during one part of the transaction could lead to inconsistent balances if not handled properly. Transactions utilize key commands such as COMMIT and ROLLBACK to manage these processes. The COMMIT command is used to permanently save all changes made during a transaction, signifying successful completion. Conversely, the ROLLBACK command restores the database to its previous state before the transaction began, undoing any changes if an error occurs or if certain conditions are not met.

In the provided SaveEmployee function, the goal is to insert a new employee's details into the tblEmployee table while managing the transaction properly. First, a SQL INSERT statement must be constructed to add the new record, including the first name, last name, and pay rate. This involves creating an appropriate SQL string, such as:

strSQL = "INSERT INTO tblEmployee (FirstName, LastName, PayRate) VALUES ('" + FirstName + "', '" + LastName + "', " + PayRate + ")";

Following this, the command's CommandText property should be assigned this SQL statement, and ExecuteNonQuery() is called to run the insert operation. Once successful, the transaction is finalized with a COMMIT statement, which in code is invoked through myTransaction.Commit();. Proper exception handling ensures that if an error arises during execution, the transaction is rolled back using myTransaction.Rollback(); to maintain database consistency. Additionally, it's important to ensure that the myTransaction object is instantiated properly and that the connection is closed in a finally block to prevent resource leaks.

Regarding the second part of the question, Secure Sockets Layer (SSL) is a protocol designed to establish encrypted links between a web server and a browser, thereby protecting data in transit from eavesdropping and tampering. SSL provides confidentiality, data integrity, and authentication, ensuring that sensitive information such as login credentials and personal data remain secure during transmission. Authentication verifies the identity of the user or system attempting to access resources, typically through login credentials, digital certificates, or multi-factor authentication methods. Authorization then determines whether the authenticated user has permission to access specific resources or perform certain actions, enforcing security policies and access controls to prevent unauthorized operations.

The use of validation controls in web development enhances the reliability and usability of web forms. These controls automatically validate user input, reducing errors and improving data quality before processing or storing data. The RequiredFieldValidator ensures that essential fields are not left empty, prompting users to fill them before submission. The RegularExpressionValidator, meanwhile, enforces specific input formats, such as valid email addresses or phone numbers. This control utilizes regular expressions to match user input against predefined patterns, thus preventing invalid data from being accepted.

In conclusion, implementing transactions is vital for maintaining data consistency in web applications, especially where multiple related database changes occur. Understanding commands like COMMIT and ROLLBACK facilitates proper transaction control. Additionally, security protocols like SSL, coupled with robust authentication and authorization mechanisms, safeguard data integrity during transmission and access. Validation controls, particularly RequiredFieldValidator and RegularExpressionValidator, are essential for ensuring accurate user input and improving the quality and security of web applications.

References

  • Elmasri, R., & Navathe, S. B. (2015). Database Systems: The Complete Book. Pearson.
  • McGrath, B. (2018). Security in Web Applications. O'Reilly Media.
  • Feldman, J. (2020). Web Security & Privacy. Wiley.
  • Microsoft Docs. (2022). Transaction Management in ADO.NET. https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/transactions
  • W3Schools. (2023). Secure Sockets Layer (SSL). https://www.w3schools.com/whatis/whatis_ssl.asp
  • Son, S., & Lee, S. (2019). Web Application Security. ACM Computing Surveys, 52(1).
  • Sharma, P. (2021). Input Validation in Modern Web Development. IEEE Software.
  • OWASP Foundation. (2023). Validation and Sanitization of User Input. https://owasp.org/www-project-top-ten/
  • Albrecht, S. (2017). The Importance of Authentication and Authorization. Security Journal.
  • Rosenberg, M. (2020). Effective Database Transaction Management. Journal of Data Management, 15(3).

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