GATE FORUM - Recent questions and answers in File organization, indexing (B and B+ trees)
http://gateforum.org//qa/computer-science-information-technology/databases/file-organization-indexing-b-and-b-trees
Powered by Question2AnswerAnswered: B+ Trees are considered BALANCED
http://gateforum.org//772/b-trees-are-considered-balanced?show=2344#a2344
Ravi tejaFile organization, indexing (B and B+ trees)http://gateforum.org//772/b-trees-are-considered-balanced?show=2344#a2344Thu, 08 Dec 2016 12:15:04 +0000Answered: maximum and minimum no of keys can be present in leaf nodes in B trees
http://gateforum.org//1794/maximum-and-minimum-no-of-keys-can-be-present-in-leaf-nodes-in-b-trees?show=1796#a1796
<p>a B-tree of order m is a tree which satisfies the following properties:</p><ul><li>Every node has at most m children.</li><li>Every non-leaf node (except root) has at least ceil(m⁄2) children.</li><li>The root has at least two children if it is not a leaf node.</li><li>A non-leaf node with k children contains k−1 keys.</li><li>All leaves appear in the same level, and carry information.</li></ul>File organization, indexing (B and B+ trees)http://gateforum.org//1794/maximum-and-minimum-no-of-keys-can-be-present-in-leaf-nodes-in-b-trees?show=1796#a1796Thu, 03 Mar 2016 14:37:21 +0000Answered: B+-tree in which the maximum number of keys in a node
http://gateforum.org//1161/b-tree-in-which-the-maximum-number-of-keys-in-a-node?show=1795#a1795
<p>a B-tree of order m is a tree which satisfies the following properties:</p><ul><li>Every node has at most m children.</li><li>Every non-leaf node (except root) has at least ceil(m⁄2) children.</li><li>The root has at least two children if it is not a leaf node.</li><li>A non-leaf node with k children contains k−1 keys.</li><li>All leaves appear in the same level, and carry information.</li></ul>File organization, indexing (B and B+ trees)http://gateforum.org//1161/b-tree-in-which-the-maximum-number-of-keys-in-a-node?show=1795#a1795Thu, 03 Mar 2016 14:37:17 +0000Answered: file is organized so that the ordering of data records is the same as or close to the ordering of data entries in some index
http://gateforum.org//1164/file-organized-that-the-ordering-data-records-the-same-close-the-ordering-data-entries-some-index?show=1165#a1165
<table><tbody><tr><td><p>Clustered</p></td></tr></tbody></table>File organization, indexing (B and B+ trees)http://gateforum.org//1164/file-organized-that-the-ordering-data-records-the-same-close-the-ordering-data-entries-some-index?show=1165#a1165Sat, 20 Feb 2016 11:59:39 +0000Answered: clustering index is defined on the fields which are of type
http://gateforum.org//1162/clustering-index-is-defined-on-the-fields-which-are-of-type?show=1163#a1163
non-key and orderingFile organization, indexing (B and B+ trees)http://gateforum.org//1162/clustering-index-is-defined-on-the-fields-which-are-of-type?show=1163#a1163Sat, 20 Feb 2016 11:57:59 +0000Answered: index is clustered
http://gateforum.org//1159/index-is-clustered?show=1160#a1160
the data records of the file are organized in the same order as the data entries of the indexFile organization, indexing (B and B+ trees)http://gateforum.org//1159/index-is-clustered?show=1160#a1160Sat, 20 Feb 2016 11:56:44 +0000Answered: B+ trees are preferred to binary trees in databases
http://gateforum.org//770/b-trees-are-preferred-to-binary-trees-in-databases?show=771#a771
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Disk access is much slower than memory accessFile organization, indexing (B and B+ trees)http://gateforum.org//770/b-trees-are-preferred-to-binary-trees-in-databases?show=771#a771Thu, 18 Feb 2016 20:33:44 +0000Answered: preferring B-trees to binary search trees for indexing database relations
http://gateforum.org//768/preferring-b-trees-to-binary-search-trees-for-indexing-database-relations?show=769#a769
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Data transfer form disks is in blocks.File organization, indexing (B and B+ trees)http://gateforum.org//768/preferring-b-trees-to-binary-search-trees-for-indexing-database-relations?show=769#a769Thu, 18 Feb 2016 20:32:27 +0000Answered: B+-tree in which the maximum number of keys in a node
http://gateforum.org//766/b-tree-in-which-the-maximum-number-of-keys-in-a-node?show=767#a767
Since the maximum number of keys is 5, maximum number of children a node can have is 6. By definition of B Tree, minimum children that a node can have would be 6/2 = 3. Therefore, minimum number of keys that a node can have becomes 2File organization, indexing (B and B+ trees)http://gateforum.org//766/b-tree-in-which-the-maximum-number-of-keys-in-a-node?show=767#a767Thu, 18 Feb 2016 20:31:25 +0000