{"id":955,"date":"2020-09-23T03:34:20","date_gmt":"2020-09-23T03:34:20","guid":{"rendered":"http:\/\/learnlearn.uk\/alevelcs\/?page_id=955"},"modified":"2021-01-22T01:24:56","modified_gmt":"2021-01-22T01:24:56","slug":"file-organisation-access","status":"publish","type":"page","link":"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/","title":{"rendered":"File Organisation & Access"},"content":{"rendered":"
\n

Serial Files<\/h2>\n
\n\n

Serial Files<\/h3>\n

Serial files are files that are designed to be read record by record, with each record being processed in turn<\/p>\n

Data is not necessarily organized, though it is often appended to sequentially in real time and it therefore sometimes chronological.<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n\n<\/div>

Sequential Files<\/h2>\n
\n\n

Sequential Files<\/h3>\n

Sequential files have to be read in order, just like serial files, however when using sequential files you\u00a0 are often looking to access a particular record that has been stored. The program traverses the file until it reaches the desired record, it then returns that record for further use\/processing.<\/p>\n

 <\/p>\n\n<\/div>

Direct Access Files<\/h2>\n
\n\n

Direct Access Files<\/h3>\n

Direct access files are files where the data does not need to be read in order, instead data can be read directly from a particular point in a file. This makes access far more efficient, especially with larger files that are thousands or millions of lines long.<\/p>\n

 <\/p>\n

 <\/p>\n\n<\/div>

Resources<\/h2>\n
\n\n

Resources<\/p>\n

Hash Tables<\/a><\/p>\n

Exam Past Paper Questions<\/strong><\/p>\n

May 2015 paper 31 Qn 7<\/p>\n

May 2016 paper 31 Qn4<\/p>\n

May 17 paper 31 qn4<\/p>\n

 <\/p>\n

 <\/p>\n<\/div><\/div>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Serial Files Serial files are files that are designed to be read record by record, with each record being processed in turn Data is not necessarily organized, though it is often appended to sequentially in real time and it therefore sometimes chronological.         Sequential Files Sequential files have to be read in… Read More »File Organisation & Access<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"yoast_head":"\nFile Organisation & Access - A Level Computer Science<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"File Organisation & Access - A Level Computer Science\" \/>\n<meta property=\"og:description\" content=\"Serial Files Serial files are files that are designed to be read record by record, with each record being processed in turn Data is not necessarily organized, though it is often appended to sequentially in real time and it therefore sometimes chronological.         Sequential Files Sequential files have to be read in… Read More »File Organisation & Access\" \/>\n<meta property=\"og:url\" content=\"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/\" \/>\n<meta property=\"og:site_name\" content=\"A Level Computer Science\" \/>\n<meta property=\"article:modified_time\" content=\"2021-01-22T01:24:56+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/\",\"url\":\"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/\",\"name\":\"File Organisation & Access - A Level Computer Science\",\"isPartOf\":{\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/#website\"},\"datePublished\":\"2020-09-23T03:34:20+00:00\",\"dateModified\":\"2021-01-22T01:24:56+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"A Level Computer Science Home\",\"item\":\"https:\/\/learnlearn.uk\/alevelcs\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"File Organisation & Access\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/#website\",\"url\":\"https:\/\/learnlearn.uk\/alevelcs\/\",\"name\":\"A Level Computer Science\",\"description\":\"CIE Specification\",\"publisher\":{\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/learnlearn.uk\/alevelcs\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/#organization\",\"name\":\"A Level Computer Science\",\"url\":\"https:\/\/learnlearn.uk\/alevelcs\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/learnlearn.uk\/alevelcs\/wp-content\/uploads\/sites\/20\/2019\/09\/LearnLearnLogowhite.png\",\"contentUrl\":\"https:\/\/learnlearn.uk\/alevelcs\/wp-content\/uploads\/sites\/20\/2019\/09\/LearnLearnLogowhite.png\",\"width\":710,\"height\":98,\"caption\":\"A Level Computer Science\"},\"image\":{\"@id\":\"https:\/\/learnlearn.uk\/alevelcs\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"File Organisation & Access - A Level Computer Science","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:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/","og_locale":"en_GB","og_type":"article","og_title":"File Organisation & Access - A Level Computer Science","og_description":"Serial Files Serial files are files that are designed to be read record by record, with each record being processed in turn Data is not necessarily organized, though it is often appended to sequentially in real time and it therefore sometimes chronological.         Sequential Files Sequential files have to be read in… Read More »File Organisation & Access","og_url":"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/","og_site_name":"A Level Computer Science","article_modified_time":"2021-01-22T01:24:56+00:00","twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/","url":"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/","name":"File Organisation & Access - A Level Computer Science","isPartOf":{"@id":"https:\/\/learnlearn.uk\/alevelcs\/#website"},"datePublished":"2020-09-23T03:34:20+00:00","dateModified":"2021-01-22T01:24:56+00:00","breadcrumb":{"@id":"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/learnlearn.uk\/alevelcs\/file-organisation-access\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"A Level Computer Science Home","item":"https:\/\/learnlearn.uk\/alevelcs\/"},{"@type":"ListItem","position":2,"name":"File Organisation & Access"}]},{"@type":"WebSite","@id":"https:\/\/learnlearn.uk\/alevelcs\/#website","url":"https:\/\/learnlearn.uk\/alevelcs\/","name":"A Level Computer Science","description":"CIE Specification","publisher":{"@id":"https:\/\/learnlearn.uk\/alevelcs\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/learnlearn.uk\/alevelcs\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/learnlearn.uk\/alevelcs\/#organization","name":"A Level Computer Science","url":"https:\/\/learnlearn.uk\/alevelcs\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/learnlearn.uk\/alevelcs\/#\/schema\/logo\/image\/","url":"https:\/\/learnlearn.uk\/alevelcs\/wp-content\/uploads\/sites\/20\/2019\/09\/LearnLearnLogowhite.png","contentUrl":"https:\/\/learnlearn.uk\/alevelcs\/wp-content\/uploads\/sites\/20\/2019\/09\/LearnLearnLogowhite.png","width":710,"height":98,"caption":"A Level Computer Science"},"image":{"@id":"https:\/\/learnlearn.uk\/alevelcs\/#\/schema\/logo\/image\/"}}]}},"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"learnlearnadmin","author_link":"https:\/\/learnlearn.uk\/alevelcs\/author\/learnlearnadmin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Serial Files Serial files are files that are designed to be read record by record, with each record being processed in turn Data is not necessarily organized, though it is often appended to sequentially in real time and it therefore sometimes chronological.         Sequential Files Sequential files have to be read in… Read…","_links":{"self":[{"href":"https:\/\/learnlearn.uk\/alevelcs\/wp-json\/wp\/v2\/pages\/955"}],"collection":[{"href":"https:\/\/learnlearn.uk\/alevelcs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/learnlearn.uk\/alevelcs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/learnlearn.uk\/alevelcs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/learnlearn.uk\/alevelcs\/wp-json\/wp\/v2\/comments?post=955"}],"version-history":[{"count":6,"href":"https:\/\/learnlearn.uk\/alevelcs\/wp-json\/wp\/v2\/pages\/955\/revisions"}],"predecessor-version":[{"id":1483,"href":"https:\/\/learnlearn.uk\/alevelcs\/wp-json\/wp\/v2\/pages\/955\/revisions\/1483"}],"wp:attachment":[{"href":"https:\/\/learnlearn.uk\/alevelcs\/wp-json\/wp\/v2\/media?parent=955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}