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Which two indexes are essential for all subject files?

The two essential indexes for all subject files are the subject index and the accession index. The subject index helps locate specific topics within the files, while the accession index assists in tracking the order and arrangement of the files.


How does sequential files work?

Sequential files do not 'work', they are nothing but sequences of bytes.


What is difference between sequential file and index file?

the index file is more sicurity checked and contains more information about the acess . for example An indexed file is a computer file with an index that allows easy random access to any record given its file key.The key must be such that it uniquely identifies a record. If more than one index is present the other ones are called alternate indexes.The COBOL language supports indexed files with the following command in the FILE CONTROL section. however a sequential file isA file that contains records or other elements that are stored in a chronological order based on account number or some other identifying data. In order to locate the desired data, sequential files must be read starting at the beginning of the file. A sequential file may be stored on a sequential access device such as magnetic tape or on a direct access device such as magnetic disk. Contrast with random-file.Read more: sequential-fileContent of sequential file can't be accessed directly while index file content can be accessed directly through pointer. Sequential file is time consuming in comparison with index file.Example: Index of book - index fileExample: Bundle of plates - sequential file


Defference between direct sequential and index sequential?

reduce the chance of false identification.----apex


Implementation of index sequential file organization?

Indexed sequential file organization. =In indexed sequential file organization, the records arestored in sequence according to a primary key and an index is created to allow random access of the file. This type of organization also allows the file to be accessed sequentially. Indexed sequential is the most commonlyused type of file organization. writer-k.k.b -montanna


What are different types of files?

There are two types of file organization associated with computer programming. The first is sequential filing where files are arranged in a sequence order in which they are written. The second file type is relative filing where files are recorded based on their consecutive numbered position which is referred to as the cell number.


What are sequential access files?

The file(s) (data) which are accessed in a sequential or a orderly manner is called as a sequentially accessing a file.


What are the advantages of indexed-sequential file organisation?

Indexed-sequential file organization allows for efficient storage and retrieval of records by combining the benefits of sequential access (fast for batch processing) and direct access (quick for individual record retrieval). It provides faster access to records compared to purely sequential files while maintaining sequential organization for improved batch processing performance. The index allows for quick access to specific records without needing to search through the entire file.


What is the 3 diff methods of organizing file?

Sequential, Relative, Indexed.


What are the advantages and disadvantages of indexed-sequential file organization?

Well, honey, let me break it down for you. The advantage of indexed-sequential file organization is that it allows for quick access to records through the index, making retrieval faster than in sequential files. However, the downside is that maintaining the index can be a pain in the rear, especially as the file grows in size. So, it's like having a fancy sports car - it's great when it works, but it can be a headache to maintain.


Difference between Index File and Index Sequential file?

index file is organized with the help of any key as index number at rondomly but index sequencial file organized with the help of any index sequentialy rajesh patel


Random access and sequential access file in vb 6.0?

To access a particular data item in a sequential file, you need to read in all items in the file prior to the item of interest. This works acceptably well for small data files of unstructured data, but for large, structured files, this process is time-consuming and wasteful. Sometimes, we need to access data in non-sequential ways. Files which allow non-sequential access are random access files.