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!!!!!Англійська мова для спеціальностей Економі...doc
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Active Words and Phrases:

storage

зберігання; запам‘ятовуючий пристрій; пам‘ять

sequential

послідовний

temporary

тимчасовий

successive

наступний; який (що) йде один за одним; послідовний

permanent

постійний; безперервний

batch

пакет; пачка

auxiliary

допоміжний

deposit

вклад (банківський); депозит

secondary

допоміжний; вторинний; побічний

withdrawal

вилучення

file management system

системи керування файлами

direct access storage device (DASD)

запам‘ятовуючий пристрій з прямим доступом

entity

логічний об‘єкт

random

випадковий

field

поле

location

місцезнаходження

property

властивість; якість

identifier

ідентифікатор; ім‘я

attribute

атрибут; ознака; властивість

index entry

стаття індексу; стаття алфавітного покажчика

maintain

підтримувати; зберігати; обслуговувати

primary

первісний; первинний

file maintenance

ведення (супроводження) файла

Ex. III. Answer the questions.

  1. Can the main memory be used for the permanent storage of data?

  2. What is the major goal of information system designers?

  3. What does a file consist of?

  4. What does a record in a file describe?

  5. What does each field describe?

  6. How are records in sequential file systems processed?

  7. How are sequential files stored and what are they used for?

  8. What kind of devices made it possible to locate a random data block on the disks?

  9. What does an index of a file consist of?

  10. How are indexes navigated?

Ex. IV. Here are the answers. Work out questions.

  1. Locations of indexes to items beginning with the letters A, B, etc.

  2. Pointers to indexes of items beginning with the letters Ab, Ac, and so on.

  3. Purely indexed or indexed-sequential.

  4. The record’s location.

  5. The location of a block of sequentially ordered records.

  6. The automatic creation of indexes.

Ex. V. Fill in the gaps with the words from the box.

Random, storage, sequential, fields, access, secondary, files, file maintenance, batches, retrieval

  1. A file is simply an organized collection of ............ and ...........

  2. The process of modifying the contents of a file by adding, deleting or correcting records is termed ...................

  3. There are two principal types of file maintenance; one is associated with .......... access mass memory devices, the other is relevant to mass memory with random access.

  4. ............ access permits transactions to be processed in the order in which they are received.

  5. A disk is particularly suitable for the .... of random access files.

  6. Transactions are collected into .......... over a period to form on unsorted transactions file.

  7. The handling of .............. makes up a huge part of the work of computers.

  8. A file management system is software that manages the storage, ............ to, ............ from, and of flat files.

  9. A set of files is stored permanently on some ........ storage device.