Answer each question in 200 words
Question 1
Index Creation: How would you decide whether an index should be created for a table? Discuss the indexes introduced this week and provide examples of each index. When would you want to use BTree vs. Bitmap indexes?
Question 2
View Security: Select a business scenario and describe how a view can be used to provide a degree of security.
Question 3
Materialized Views: What is a materialized view and what types problems can it help solve? Provide an example of a materialized view and discuss its relevance to the information system.
Question 4
Please discuss the concept of transaction management as well as transactional properties from your own understanding. In addition, discuss how these concepts relate to concurrency control within a database management system.
Last Completed Projects
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jQuery(document).ready(function($) { var currentPage = 1; // Initialize current page
function reloadLatestPosts() { // Perform AJAX request $.ajax({ url: lpr_ajax.ajax_url, type: 'post', data: { action: 'lpr_get_latest_posts', paged: currentPage // Send current page number to server }, success: function(response) { // Clear existing content of the container $('#lpr-posts-container').empty();
// Append new posts and fade in $('#lpr-posts-container').append(response).hide().fadeIn('slow');
// Increment current page for next pagination currentPage++; }, error: function(xhr, status, error) { console.error('AJAX request error:', error); } }); }
// Initially load latest posts reloadLatestPosts();
// Example of subsequent reloads setInterval(function() { reloadLatestPosts(); }, 7000); // Reload every 7 seconds });