Discussion
Web applications make remote access to system resources and data possible via the Internet. However, there are considerations that must be addressed when enabling this, including the appropriateness of making data available via the Internet, access controls to the data, access controls to the Web application allowing access to the data, and methods of securely granting access to this data while protecting the confidentiality and integrity of that data.
Please respond to all of the following prompts:
• Identify the advantages and disadvantages of using the Internet to set up access to your company data.
• Identify the advantages and disadvantages of using VPN and other proprietary access methods.
• Compare and contrast that advantages of tables and views.
Assignment
Answer the following discussion questions:
• What argument can be one of several values to determine what you can do with a file after you open it?
• What PHP feature automatically adds a backslash to any single quote, double quote, or NULL character contained in data that a user submits to a PHP script?
• What function reads the contents of a file into a string?
• What is a file pointer? What does it do?
• Which function returns a single character and moves the file pointer to the next character?
• Which function returns a line, parses the line for CSV fields, and then moves the file pointer to the next line?
• Which function changes the specified directory?
• What function can you use to create a new directory?
• How would you determine whether a file or directory exists from within PHP?