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The data model determines the data structures needed, which in turn influences the data storage requirements. Choosing the correct storage structure will reduce the storage requirements, while choosing in inappropriate structure will increase the requirements pointlessly. When storing a person's age, using 8 bits (0-255) is most likely sufficient: using more bits would be wasteful until humans begin to live longer than 255 years, and using less would risk not being able to accurately represent the person's age.
In computer programming, because space is abundant, but still limited, it is important to choose the data structure that is most suited to the task. Programmers are often given choices as to how they would like to represent a piece of data, and this choice is driven by functionality requirements.
Numeric values, for example, can be stored as binary, binary-coded decimals (BCD), or strings. Storing the number as a string makes it easy for humans to modify the value in a text editor, but uses more storage than BCD. BCD is useful for reading the number in a debugger, because the number appears as a normal decimal number when read in hexadecimal, but is still less efficient than a binary representation in terms of space. Binary numbers are the most efficient with storage usage, but are not easily readable in a memory dump or editing by hand in a text editor.
Often times, programmers will need to choose a data structure that balances between desired functionality and the associated limitations of using that structure. Using ASCII encoded values uses half the space (or less) than some versions of Unicode, but can only display a limited set of characters. This means that a programmer may choose to use ASCII for a primarily Latin-based language audience (English, Spanish, and so on), but may need to choose Unicode for international audiences (Japanese, Chinese, etc).
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Data Structures and Algorithms in Java?
Data structures has been implemented in Java language already, you just need to import it and start using it. Data Structures are located in Java.util packages.ArrayArraylistVectorHashMapHashTableLinkedListStackQueueCollection this are the few I know.Thanks,Anandkumar.R
What is data coupling in Software?
Coupling is a measure of the relationship or dependency between two modules. Data Coupling occurs between two modules when data is passed by parameters using a simple argument list and every item in the list is used.
What do VTL operator do?
VTL operators, or Virtual Tape Library operators, manage data storage systems that emulate traditional tape libraries using disk storage technology. They facilitate the backup, archiving, and recovery of data, providing faster access and improved reliability compared to physical tape solutions. VTLs streamline data management by enabling automated data movement between disk and tape systems, optimizing storage efficiency and reducing operational costs.
Is a linked list a physical data structure?
Physical data structures are how data is organized on a hardware storage device, and therefore how they appear to the computer. Logical or virtual data structures are software-based objects, and how the user or program sees it. Although many file systems use a type of linked list format for storing information, a linked list is used for both hardware and software purposes, and therefore it cannot fall under either the physical or virtual data structure classification.
What are data structures consisting of related data items of the same type?
header and bloc
What is a page file?
1. The action of transferring instructions, data, or both between real storage and external page storage. 2. Moving data between memory and a mass storage device as the data is needed.
What is the fundamental difference between logical and physical data structures?
1) Logical data structures are structures that emphasize on data relationships and how data is related from the view of the user. 2) Physical data structures are data models that emphasize on the use of efficiently and effectively storing data in memory.
What is the relationship between two data sets when one data set of data values increases while the other decreases?
There is an inverse relationship between the datasets.
What is the relationship between two data sets when their data values increase or decrease together?
It is a positive relationship.
What are the advantages and disadvantages of Entity Relationship Diagrams?
Entity-Relationship diagrams are useful for modelling data and the relationships between the data. They can be used when the constraints between data are relatively simple. They do not allow specification of interactions between the data or model how the data changes (there are no processes in Entity-Relationship). Entity-Relationship diagrams are most often used to model databases.
What represents a correspondence between various data elements?
relationship
What has the author Rebecca W Portier written?
Rebecca W Portier has written: 'Data structures for the Fire Data Management System, FDMS 2.0' -- subject(s): Fire testing, Information storage and retrieval systems, Data processing, Data structures (Computer science), Databases
Difference between a ram and cmos?
ram is a computer data storage
The relationship between data is defined in the?
logical level
What is the relationship between telecommunication and data communication?
They are both forms of communication They are both a form of communication; data communication is a subset of telecommunication, telecommunication send data between two links by means of electromagnetic. (Like satellite), while data communication means send data by telecommunication, it consists of codes of 0's and 1's. In computer means, Data communication is digital data and telecommunication is equipped to send digital data to receiver.
What are the two basic ways in representing linear structures in memory?
Data structures are classified as either linear or non linear, a data structure is said to be linear if its elements form a sequence, or, in other words, a linear list, there are two basic ways of representing such linear structures in memory, one way is to have the linear relationship between the elements represented by means of sequential memory locations, these linear structures are called arrays, the other way is to have the linear relationship between the elements represented by means of pointers or links, these linear structures are called linked lists.
What describes the relationship between one set of data that decreases as another set of data increases?
The relationship between one set of data that decreases as another set of data increases is described as an inverse or negative correlation. In this scenario, when the values of one variable rise, the values of the other variable fall, indicating that they move in opposite directions. This type of relationship can be observed in various contexts, such as the relationship between supply and price or the relationship between demand and price.
