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The disk can have multiple platters that spin with read/write heads that hover ... One ring on a platter is a track, a stack of tracks in a cylinder. ...
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BTREE Indices A little context information What s the purpose of an index? Example of web search engines Queries do not directly search the WWW for data;
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?? ?????????? ?????? ????? ????? ??????? (???? ????? ???????) ... 8 B-Tree-Slit-Child(s,1,r) 9 B-Tree-Insert-Nonfull(s,k) 10 else B-Tree-Insert-Nonfull(r,k) ...
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Directory nodes below the root are called internal nodes. ... loaded in a left-to-right fashion so that successive inserts normally occur to ...
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Queries do not directly search the WWW for data; ... that each internal node has the minium number of descendents (M/2); this results ...
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Large directories. Resizing. File systems we know and love. Granddaddy: Unix FS ... Space efficient indexed directories fast access and small directories ...
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... replaced by physical space criterion in practice ('at least half ... if comparison of attribute that's indexed, look up matches in index & return those ...
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Every page except the root and leaves. has at least m/2 descendents, m/2 ... The leaf level forms a complete, ordered index. Insert a new key : split (or ...
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What will I learn from this lecture? Basics of indexes. What are data entries? ... Implication: records not contiguously stored, may need one disk access (i.e. ...
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EE 441 S. Ece GURAN. EE 441 Data Structures. Btrees example ... EE 441 S. Ece GURAN. BTree Example. 30. 20. 40. 10. 15. 35. 38. 25. Insert 55: ... GURAN. BTree ...
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The longest path in a B-tree of n keys is log d n nodes, d being the order of B-tree. ... Next it should be checked to see that atleast d keys remain. ...
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1. An Efficient Buffer Management Scheme for. Implementing a ... Less or efficient writing/erasing. Btree Index may be writing/updating intensive on NAND flash. ...
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Hash fn works on search key field of record r. Use its value MOD N to distribute ... increment local depth of original page. allocate new page with new local depth ...
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That is, an element providing directions for moving around in the tree. ... Left sub-trees stored all keys smaller than the parent key ...
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Handles hard, pre-placed, soft and rectilinear modules. directly and ... pre-placed module bi cannot be packed to its fixed position ... Pre-placed Modules ...
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... nodes are at the same level ) Restrictions of B-Tree. Root has ... Related work before. Methodologies proposed. B-tree index Structure and Transaction Model ...
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Used the index for a text searching (vector model) ... The Dewey Decimal System. Has a 'fan-out' of 10 (decimal) No attempt to be balanced. ...
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... all pages (or nodes) in the tree has the minimum allowed number of descendents ... of order m, the minimum number of descendents from the root page is 2. It is ...
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CPU usage also can be a factor in some database applications. ... Btree Insertion Examples. Btree Deletion Examples. Cost of Operations ...
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Perform inserts and deletes on Btrees, extndible and linear hash indexes ... Insert: Find leaf data entry belongs to, and put it there. Perhaps in an overflow page ...
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Importance of providing detailed inputs and using tools that are ... Bushy: multi-way tree. Block-oriented. Dynamic. 8-27. Structure of a Btree of Height 3 ...
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read r and add it to buffer page h(ri) foreach tuple s in S do //flush when fills ... there are unclustered BTree indexes on R.a and S.b. Is it cheaper to do an index ...
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2 attributes A and B. Attribute A is of type Integer and B is of type String. ... Create secondary key with the attribute value as a search key. Btree. Hash ...
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... no load/save Builder/Guesser with save/no load Guesser with ... Is it an amphibian? no yes Cow Giraffe Tiger Frog Parrot no yes no yes no yes Questions ...
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Define the set S to be the smallest set of natural numbers satisfying the ... (lambda (s) (if (number? S) 1 ( (count-nodes (cadr s)) (count-nodes (caddr s)) 1 ) ...
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To save a tree between uses. e.g. An AVL dictionary used for spelling ... Written in preorder on a sequential file. Rebuild with a straight building program ...
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Chapter 8 Physical Database Design
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Foundations of Database Systems Indexing Instructor: Zhijun Wang DBMS and Applications * * This depicts a bitmap column index for a sample Faculty table.
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Clocked Circuits. Modeling Software with PVS. Sequential Software. 3 ... Clocked Circuits. Combinational part registers (latches) Examples: Processors, Controllers, ...
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. SQL Server . . SQL Server . SQL Server DBA
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Binary Search Tree A binary tree where every node's left subtree has values less than the node's value, and every right subtree has values greater.
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Binary Search Tree A binary tree where every node's left subtree has values less than the node's value, and every right subtree has values greater.
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Class invariants. Partial packing and unpacking 'Ownership' relation. Discussion ... class B extends A { int z ; invariant y z ; ...
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Terminals are literals or particular symbols. ... Trade off is between the storage need for the pointers and extra execution time ...
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Chain of Metadata blocks for recent versions. Resource Accounting ... 10/3/09. ROC/OceanStore Winter Retreat 2002. 15. Acknowledgements. My Wife, Cheryl ...
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12.0 b- b+ 12.1 12.2 12.3 12.4
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Tuning Oracle SQL The Basics of Efficient SQL Common Sense Indexing The Optimizer Making SQL Efficient Finding Problem Queries Oracle Enterprise Manager
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... color mother father) (define nana (make-ft alice blue unknown unknown) ... Blue-eyed ancestor, all-blue-eyed-ancestors, how-deep. Binary Trees. More general form ...
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... facebook, myspace, flickr, del.icio.us, Yahoo!Answers, rottentomatoes.com, ... must refresh 304 material and be prepared to answer questions based on 304. ...
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The End of an Architectural Era Shimin Chen (Big Data Reading Group) (many s are copied from Stonebraker s presentation) Papers
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Issues in Database Performance Performance in Read / write are hardware issues = throw money at it Performance of DB = ability of engine to locate data
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IBM Almaden. Marianne Winslett. University of Illinois. Soumyadeb ... IBM Almaden. There is a need for trustworthy record keeping. HIPAA. Focus on Compliance ...
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To do range queries (the queries need NOT be degree-3 ... 51 56 57 62. 48 51. 53 56. 40 99. meta data. 10/12/09. 25. P0. K0. K2k 1. P2k 1. leaf. node. blink ...
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Pre-order: ... Time complexity of Pre-order Traversal. For every node x, we will call. pre-order(x) one time, which performs O(1) operations. Thus, the total time = O ...
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Title: Selling a Product or Service Author: Peter X. Cao Last modified by: Peter Cao Created Date: 5/18/2006 2:39:14 PM Document presentation format
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(From Greek mythology) Gaea. Cronus. Zeus. Poseidon. Demeter. Pluto. Phoebe. Ocean. Leto. Apollo ... Terminals are literals or particular symbols. ...
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Title: Logics for Data and Knowledge Representation Last modified by: RUI Document presentation format: Custom Other titles: Gill Sans Arial Wingdings 3 ...
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A New backend of recently released OpenLDAP 2.1. Use native Berkeley DB API - BDB transactional store. Transaction-protected updates via write-ahead logging ...
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Title: SQL Query Optimisation Subject: Ian Smith's Master Author: Dept of Computing Sciences Last modified by: Gitte Christensen Created Date: 9/15/1997 9:06:54 AM
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... linear linked list is like a clothes line on which the data structures hang sequentially ... a linked list from a line of text. 2 concatinate the list ...
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A latest addition to the DecisionDatabases.com repository is the addition of Global Anti-Static Packaging Materials Industry 2016 Market Research Report. The report along with the industry analysis gives a detailed account of big manufacturers and producers of the industry.
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Trees are structures used to represent hierarchical relationship ... v and x are descendents of u. 10/7/09. CS201. 8. Terminology IV ...
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Rahmady Liyantanto liyantanto@gmail.com liyantanto.wordpress.com Tree Struktur Data S1 Teknik Informatika Universitas Trunojoyo POHON / TREE Struktur Data Struktur ...
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