{"id":15725,"date":"2024-04-15T04:51:18","date_gmt":"2024-04-15T04:51:18","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=15725"},"modified":"2024-04-15T04:51:18","modified_gmt":"2024-04-15T04:51:18","slug":"cascade-update-option-a-means-do-not-change-the-value-in-the-primary-key-field-if-that-record-has-related-records-in-another-table-b-means-change-all-the-related-records-in-child-tables-if-the-recor","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/cascade-update-option-a-means-do-not-change-the-value-in-the-primary-key-field-if-that-record-has-related-records-in-another-table-b-means-change-all-the-related-records-in-child-tables-if-the-recor\/","title":{"rendered":"Cascade update option A. means do not change the value in the primary key field if that record has related records in another table B. means change all the related records in child tables if the record in parent table is changed C. Both of above D. None of above"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a985ecf0d2ca\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    means do not change the value in the primary key field if that record has related records in another table                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"true\">\r\n                    means change all the related records in child tables if the record in parent table is changed                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Both of above                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    None of above                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: <strong>B. means change all the related records in child tables if the record in parent table is changed.<\/strong><\/p>\n<p>A cascade update is a database operation that automatically updates related records in other tables when a record in the parent table is updated. For example, if you have a table of customers and a table of orders, and you update a customer&#8217;s name, the cascade update option would automatically update the customer&#8217;s name in all of the orders that the customer has placed.<\/p>\n<p>The cascade update option is useful when you want to ensure that all of <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div>        <\/a>\r\n    <\/div> the related records are kept up-to-date. However, it is important to use it with caution, as it can cause unexpected results if the related records are not properly defined.<\/p>\n<p>Option A is incorrect because it does not describe the cascade update option. The cascade update option does not mean &#8220;do not change the value in the primary key field if that record has related records in another table.&#8221; Instead, it means &#8220;change all the related records in child tables if the record in parent table is changed.&#8221;<\/p>\n<p>Option C is incorrect because it is a combination of Option A and Option B. The cascade update option is not both &#8220;do not change the value in the primary key field if that record has related records in another table&#8221; and &#8220;change all the related records in child tables if the record in parent table is changed.&#8221; Instead, it is only &#8220;change all the related records in child tables if the record in parent table is changed.&#8221;<\/p>\n<p>Option D is incorrect because it is the only option that is not a correct description of the cascade update option. The cascade update option is not &#8220;None of above.&#8221; Instead, it is &#8220;change all the related records in child tables if the record in parent table is changed.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[672],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cascade update option A. means do not change the value in the primary key field if that record has related records in another table B. means change all the related records in child tables if the record in parent table is changed C. Both of above D. 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Both of above D. None of above","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/cascade-update-option-a-means-do-not-change-the-value-in-the-primary-key-field-if-that-record-has-related-records-in-another-table-b-means-change-all-the-related-records-in-child-tables-if-the-recor\/","og_locale":"en_US","og_type":"article","og_title":"Cascade update option A. means do not change the value in the primary key field if that record has related records in another table B. means change all the related records in child tables if the record in parent table is changed C. Both of above D. 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