Learning objective
Client server databases: Know that a client server database system provides simultaneous access to the database for multiple clients. Know how concurrent access can be controlled to preserve the integrity of the database. Concurrent access can result in the problem of updates being lost if two clients edit a record at the same time. This problem can be managed by the use of record locks, serialisation, timestamp ordering, commitment ordering.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
0
Flashcards
0
Questions
Topic
Client server databases
Subtopic
Client server databases
Study support
Understand this objective
Quick explanation
Client server databases: Know that a client server database system provides simultaneous access to the database for multiple clients. Know how concurrent access can be controlled to preserve the integrity of the database. Concurrent access can result in the problem of updates being lost if two clients edit a record at the same time. This problem can be managed by the use of record locks, serialisation, timestamp ordering, commitment ordering
- This point belongs to Client server databases, especially Client server databases.
- You need to be able to client server databases: Know that a client server database system provides simultaneous access to the database for multiple clients. Know how concurrent access can be controlled to preserve the integrity of the database. Concurrent access can result in the problem of updates being lost if two clients edit a record at the same time. This problem can be managed by the use of record locks, serialisation, timestamp ordering, commitment ordering.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Why it matters
This objective helps connect Client server databases to exam-style questions, flashcards, and revision notes for Client server databases.
Quick student answer
What is a key feature of a client server database system?
Direct answer
It provides simultaneous access to the database for multiple clients.
Key terms
- Concurrent access: Access to the same database by multiple clients at the same time.
- Serialisation: A method of controlling concurrent access by arranging database operations into an agreed sequence.
Common trap
Confusing a lost update with any failed database operation: A lost update specifically occurs when two clients edit the same record and one saved update overwrites the other.
Related questions
Try this as a practice card
Question 1 of 4
Choose an answer, get feedback, then move sideways through the set.
Flashcard prompts
Flip through the key recall cards
Flashcard 1 of 4
Revision tools