Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 24: Problem 12

What are the main differences between tuple versioning and attribute versioning?

Short Answer

Expert verified
The primary differences between Tuple and Attribute versioning lie in terms of space usage and history track record. Tuple versioning creates a new tuple for every change in the data, consuming more space but providing a full history of changes. Conversely, Attribute versioning only changes the specific attribute that has been modified, which is more space efficient, but gives history only concerning those particular attribute changes.

Step by step solution

01

Understanding Tuple Versioning

Tuple versioning is a method used in databases where every change to a record results in a new tuple, which is essentially a new row being created. This new tuple contains both the new and original data but marks the original tuple as an older version. This method keeps track of all versions of a data record, providing a complete history of changes.
02

Understanding Attribute Versioning

Attribute versioning, also used in databases, makes a change to a particular attribute of a record and creates a new version. Unlike tuple versioning, it doesn't create a new row or tuple for every change. Instead, only the attribute that has been changed is updated while keeping the original version in a different attribute column of the same row.
03

Main Differences

The main differences between tuple and attribute versioning are: 1. Space usage: Tuple versioning uses more space as it creates a new tuple for every change, while attribute versioning only changes the affected attribute, thereby saving space. 2. History: Tuple versioning provides a complete history of all changes, while attribute versioning keeps track only of the changes in specific attributes.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Consider the following set of facts for the relation parent \((X, Y),\) where \(Y\) is the parent of \(x:\) parent(a,aa), parent(a,ab), parent(aa,aaa), parent(aa,aab), parent(aaa,aaaa), parent(aaa,aaab). Consider the rules r1: ancestor \((X, Y):-\) parent \((X, Y)\) \(r 2:\) ancestor \((X, Y):-\) parent \((X, Z),\) ancestor \((Z, Y)\) which define ancestor \(Y\) of \(X\) as above. a. Show how to solve the Datalog query ancestor \((\mathrm{aa}, \mathrm{X}) ?\) using the naive strategy. Show your work at each step. b. Show the same query by computing only the changes in the ancestor relation and using that in rule 2 each time. [This question is derived from Bancilhon and Ramakrishnan (1986).]

How are multimedia sources indexed for content-based retrieval?

Briefly discuss the consistency and termination problems when designing a set of active rules.

Discuss some applications of active databases.

What are the different types of multimedia sources?
See all solutions

Recommended explanations on Computer Science Textbooks

Game Design in Computer Science

Read Explanation

Data Structures

Read Explanation

Data Representation in Computer Science

Read Explanation

Databases

Read Explanation

Big Data

Read Explanation

Problem Solving Techniques

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free