sequential-access: meaning, definition, pronunciation and examples
lowtechnical
Quick answer
What does “sequential-access” mean?
A method of data storage and retrieval where information must be accessed in a fixed, linear order, starting from the beginning.
Audio
Pronunciation
Definition
Meaning and Definition
A method of data storage and retrieval where information must be accessed in a fixed, linear order, starting from the beginning.
Refers to any system, process, or medium where items can only be read or processed in the strict chronological or positional sequence in which they are stored, contrasting with random-access systems. This can be applied metaphorically to non-technical contexts describing linear, non-skippable processes.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling of related terms may follow regional conventions (e.g., 'memory' vs. 'storage' usage patterns).
Connotations
Equally technical and neutral in both varieties. Connotes older technology or specific constraints.
Frequency
Low frequency in general language, but equally present in technical computing literature in both regions.
Grammar
How to Use “sequential-access” in a Sentence
[sequential-access] + [noun] (e.g., sequential-access device)to have/require/use [sequential access]the [noun] of sequential accessVocabulary
Collocations
Examples
Examples of “sequential-access” in a Sentence
adjective
British English
- The programme relied on a sequential-access data cartridge.
- We need to replace this sequential-access archive system.
American English
- The program relied on a sequential-access data cartridge.
- The legacy system used sequential-access memory, which was a bottleneck.
Usage
Meaning in Context
Business
Rare; used only when discussing legacy IT infrastructure or specific data management constraints in very technical business contexts (e.g., 'Migrating from sequential-access archives').
Academic
Common in Computer Science, Information Technology, and Data Management courses and literature to describe fundamental storage models and algorithmic complexity.
Everyday
Virtually non-existent. Might be encountered by users dealing with specific media (e.g., explaining why fast-forwarding a cassette tape is slow).
Technical
Core term in computer architecture, data structures, and storage technology. Used to describe memory types (e.g., SAM vs. RAM), file access methods, and database scanning operations.
Vocabulary
Synonyms of “sequential-access”
Strong
Neutral
Weak
Vocabulary
Antonyms of “sequential-access”
Watch out
Common Mistakes When Using “sequential-access”
- Hyphenation: Incorrectly writing as 'sequential access' when used as a compound adjective before a noun (e.g., 'a sequential-access file' is correct; 'a sequential access file' is less standard).
- Confusing with 'serial': In some contexts, 'serial' is synonymous, but 'serial' can also refer to data transmission, not just storage access.
- Using it to describe general 'step-by-step' processes where the access constraint is not the core concept (e.g., 'I learned the language via sequential-access lessons' is an overextension).
FAQ
Frequently Asked Questions
The primary disadvantage is slower access time for data located far from the current read/write position, as the system must traverse all intervening data.
Yes, it is still used in high-capacity backup solutions (like magnetic tape libraries), certain types of log files, streaming data, and in specific algorithmic processes where data is naturally processed in order.
The direct opposite is random access (as in Random-Access Memory or RAM), where any storage location can be accessed directly in roughly the same amount of time, regardless of its physical location.
Yes, many storage devices (like hard disk drives) support both modes of operation, but their physical design makes them better suited for sequential access for large contiguous blocks of data, while true random-access memory (RAM) is optimized for random access.
A method of data storage and retrieval where information must be accessed in a fixed, linear order, starting from the beginning.
Sequential-access is usually technical in register.
Sequential-access: in British English it is pronounced /sɪˌkwenʃəl ˈækses/, and in American English it is pronounced /sɪˌkwenʃəl ˈækses/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of a SEQUEL (like a story told in sequence) to a movie. You can't watch SEQUEL 2 without watching SEQUEL 1 first. Similarly, SEQUENTIAL-ACCESS data forces you to go through the 'story' of the data in order.
Conceptual Metaphor
ACCESSING DATA IS READING A BOOK / PLAYING A TAPE. You cannot jump to a specific chapter/page (random access) without winding through everything before it.
Practice
Quiz
Which of the following is a defining characteristic of sequential-access storage?