1. Personal - Data structures is a subject that discussing about stacks, trees, queues, arrays & lists. Data atrre the gathered information on what you had experienced or on what you had studied. The data will be arrange precisely to become a useeful one. It must be understandable to be able for the reader to apply the information. Arranging the data on its precised manner will be called the structure so therefore data structure will become an information. The information will be stored so that we can retrieve it easily or immediately when it is needed.
2. http://en.wikipedia.org/wiki/Data_structure
A data structure in computer science is a way of storing data in a computer so that it can be used efficiently. It is an organization of mathematical and logical concepts of data. Often a carefully chosen data structure will allow the most efficient algorithm to be used. The choice of the data structure often begins from the choice of an abstract data type. A well-designed data structure allows a variety of critical operations to be performed, using as few resources, both execution time and memory space, as possible. Data structures are implemented by a programming language as data types and the references and operations they provide.
3. http://www.itl.nist.gov/div897/sqg/dads/HTML/datastructur.html
Definition: An organization of information, usually in memory, for better algorithm efficiency, such as queue, stack, linked list, heap, dictionary, and tree, or conceptual unity, such as the name and address of a person. It may include redundant information, such as length of the list or number of nodes in a subtree.
4. http://www.webopedia.com/TERM/D/data_structure.html
In programming, the term data structure refers to a scheme for organizing related pieces of information. The basic types of data structures include:
files, list, arrays, records, trees, tables. Each of these basic structures has many variations and allows different operations to be performed on the data.
5. http://en.wikibooks.org/wiki/Data_Structures
This book is about the creation and analysis of efficient data structures. This book covers:
the primitive node structure;
asymptotic notation for mathematically discussing performance characteristics;
built-in arrays;
list structures built from either nodes or arrays;
iterators as an abstract model of enumerating the items in a sequence;
stacks and queues for computing with last-in/first-out and first-in/first-out orderings;
binary and general tree structures for searching or representing hierarchical relationships;
min and max heaps for representing ordering based on priorities;
graph structures for representing more general relationships between data elements;
hash tables for the efficient retrieval of strings and other objects; and finally
trade-offs between the structures, and strategies for picking the most appropriate ones.
To understand the material in this book you should be comfortable enough in a programming language to be able to work with and write your own variables, arithmetic expressions, if-else conditions, loops, subroutines (also known as functions), pointers (also known as references or object handles), structures (also known as records or classes), simple input and output, and simple recursion.
Because many different languages approach the construction of data structures differently, we use pseudo-code so that you can translate the code into your own language.
6. http://en.wikibooks.org/wiki/Data_Structures/Introduction
Data Structures
Computers can store and process vast amounts of data. Formal data structures enable a programmer to mentally structure large amounts of data into conceptually manageable relationships.
Sometimes we use data structures to allow us to do more: for example, to accomplish fast searching or sorting of data. Other times, we use data structures so that we can do less: for example, the concept of the stack is a limited form of a more general data structure. These limitations provide us with guarantees that allow us to reason about our programs more easily. Data structures also provide guarantees about algorithmic complexity — choosing an appropriate data structure for a job is crucial for writing good software.
7. http://searchsqlserver.techtarget.com/sDefinition/0,,sid87_gci804744,00.html
- A data structure is a specialized format for organizing and storing data. General data structure types include the array, the file, the record, the table, the tree, and so on. Any data structure is designed to organize data to suit a specific purpose so that it can be accessed and worked with in appropriate ways. In computer programming, a data structure may be selected or designed to store data for the purpose of working on it with various algorithms.
8. http://www.answers.com/topic/data-structure
A means of storing a collection of data. Computer science is in part the study of methods for effectively using a computer to solve problems, or in other words, determining exactly the problem to be solved. This process entails (1) gaining an understanding of the problem; (2) translating vague descriptions, goals, and contradictory requests, and often unstated desires, into a precisely formulated conceptual solution; and (3) implementing the solution with a computer program. This solution typically consists of two parts: algorithms and data structures.
9. DATA STRUCTUREA logical arrangement of data used by a specific computer system for data management, storage, and retrieval. It includes a reference linkage system between data items. The logical and physical way of organizing digital data in a database.Interrelationship among data elements that determine how data is recorded, manipulated, stored, and presented by a database. An organization in software of data that allows more optimal searching, categorizing, or storage of information.Examples: matrix, stack, queue, dequeue, list, vector, scene graph.
10. http://courses.csail.mit.edu/6.851/spring07/
Data structures play a central role in modern computer science. You interact with data structures much more often than with algorithms (think of Google, your mail server, and even your network routers). In addition, data structures are essential building blocks in obtaining efficient algorithms.
Other Definition of Data Structures
1.
Data structures provide a way to organize the data for your program in a way that is efficient and easy to use. For example, in an air combat game, there would likely be a data structure keeping track of the thirty missiles your plane has fired, the six other planes in your squadron, and the fifty alien ships that you are trying to shoot down. There are many different data structures that might be used to keep track of these objects, each of which is suited to organizing the data differently. This article is the first in a series that is intended to be a guide to using data structures in games, and should help you decide which data structure is best suited for a task. The articles are designed to be at an introductory level. However, the series also contains examples of applications of data structures to games, so programmers who are strong in other areas, but with little game experience, may benefit as well.
2.
One thing that's important to note about all of the data structures that have been discussed so far is that none of them are well suited to searching their contents. For example, say we have a collection of players in our game. We want to find the player named "Bob" in that collection, because we have just aimed a gigantic missile attack at him. Every one of the collections so far will take O(n) time to find Bob: they all have to go through their contents from beginning to end, checking each player to see if he has the desired name. In many cases, it can be desirable to quickly search through an entire collection to see if an element exists, or to jump straight to an element you know exists. The .NET Framework provides this with the Dictionary.
3.
The decision of which data structure to use, then, boils down to an analysis of how the data is likely to be used. To use the previous example of an air combat game, how often will you need to add new missiles? Will they be added every frame, or is the number of missiles a constant? How will you examine the data that makes up a missile? Will you always access missiles one after another, or will you need access to any missile at any time? Once you have a sense of how your data is likely to be used, you can decide which data structure is appropriate.
1. http://www.cs.utexas.edu/users/novak/datastr.html
Describing the Structure
The Automatic Programming Server produces versions of generic procedures that are specialized for your data structures. This document tells how to describe your data structures to the system.
When you start the Automatic Programming Server, it creates a window containing an input area and a command menu. Click the mouse in the input area, then enter the description of your data; the input editor is an Emacs subset. After the description of your data structure is complete, click the mouse outside the input area; the system will respond with a confirming message. Repeat the process as needed to define other data types.
2. http://www.wipo.int/pctdb/en/wo.jsp?wo=2002097632
Data accomodation for new data entries
The present invention provides a storage means to store digital data entries, chronometer means arranged to provide chronological information to the device, and data entry arrangement means to manipulate data entries, wherein the data entry arrangement means is configured to utilise the chronometer means to provide a chronological data entry coding to data entries based on the chronological sequence in which the data entry is stored on and accessed from the data storage means, and wherein the data entry arrangement means is further configured to analyse the data entry chronological data coding and based on the coding, compress the data entry during a data entry compression cycle.
3. http://www.gottagetarecovery.com/
Data Retrieval
A hard drive, or hard disk drive (HDD), is the storage device you use in your personal computer (PC). These are non-volatile storage devices used to store the data of your computer?meaning you can be assured that whatever data is stored in these devices, it cannot easily be erased. However, there is no guarantee that your HDD would not encounter problems causing it to crash and causing you to eventually loose your data. Inside the HDD, there are many mechanisms that move around to perform read and write functions. The HDD is made of rotating platters, commonly called disks. Each of these platters has a planar magnetic surface where the data is stored. This data is sent to a read-write head, which sends an electrical charge, executing the transaction. These moving parts and electrical charges could possibly cause the breakdown of your HDD, but manufacturers have already designed firmware into the HDD to allow more efficient scheduling of reads and writes if the HDD surface and the remapping of sectors of the disk fail. Also, HDD manufacturers have collaborated with motherboard makers in developing the Self-Monitoring, Analysis, and Reporting Technology, or S.M.A.R.T., that can warn you of possible failures, allowing you to make necessary backups before data loss occurs.
