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logical organization
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∙ 14y ago
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What is Primary file organization?
primary file organization says that how data itself is stored on the storage device. a secondary logical maintinance of physically stored data that helps us to speed access to the physically stored data.
How it is related to data independence?
Hi, Data Independence refers to the immunity of user application to make changes in the definition and organization of Data. There are three types of Data Independence - 1. Logical Data Independence - The ability to change the logical (conceptual) schema without changing the External schema (User View) is called logical data independence. 2. Physical Data Independence - The ability to change the physical schema without changing the logical schema is called physical data independence. 3. View Data Independence - always independent,no effect.
What does LDM stand for?
A logical data model (LDM) in systems engineering is a representation of an organization's data, organized in terms of entities and relationships and is independent of any particular data management technology.
What is a data dictionary in simple terms?
A repository containing information about data: their meaning, logical organization, type, relations, source, usage, classification, security policies, etc..
How can table data be arranged into a logical order?
Table data can be SORTED to arrange it in a logical order.
What types of operands are typical in machine instruction sets?
Addresses, Numbers, Characters, Logical Data (source: Computer Organization and Architecture, William Stallings)
What can be typed and entered into a cell?
Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.Any kind of data, including text, numbers, dates, times and logical data can be entered into a cell.
Why logical data independence is more difficult than physical data independence?
Logical data independence is considered more difficult than physical data independence because it involves changes to the conceptual schema and external schema, which are more closely tied to the way data is organized and viewed in the application. Physical data independence, on the other hand, deals with changes to the internal schema, which is more abstract and can be modified with less impact on the overall system.
What separates the physical aspect of data storage from the logical aspects of data representation?
A schema separates the physical aspect of data storagefrom the logical aspects of data representation.
What separates the physical aspects of data storage from the logical aspects of data representation?
A schema separates the physical aspect of data storagefrom the logical aspects of data representation.
What is logical file?
Logical file is a type of file that provides a view of the data stored into the Physical file. It does not contain data. A logical file contains only an index to the data stored into the physical file.
Which one between logical and physical data independent is harder to achieve and why?
the logical data independence is hard to achieve because all the manipulation is belonging in logical data independence but in physical data independence only show the physical view .
