Why do we need replica management in distributed system? June 16, 2022 Explanation: Using replication, you can distribute data to different locations and to remote or mobile users over local and wide area networks. Click to… Continue Reading
How normalization minimizes redundancy show with example? June 16, 2022 There are two main objectives of the normalization process: eliminate redundant data (storing the same data in more than one table) and ensure data… Continue Reading
What is data redundancy explain in DBMS? June 15, 2022 Data redundancy occurs when the same piece of data exists in multiple places, whereas data inconsistency is when the same data exists in different… Continue Reading
What does the data dictionary identify in DBMS? June 15, 2022 A data dictionary contains metadata i.e data about the database. The data dictionary is very important as it contains information such as what is… Continue Reading
How do I stop anomalies updating? June 15, 2022 An update anomaly is a data inconsistency that results from data redundancy and a partial update. For example, each employee in a company has… Continue Reading
What is normalization different types of normalization? June 14, 2022 The database normalization process is further categorized into the following types: First Normal Form (1 NF) Second Normal Form (2 NF) Third Normal Form… Continue Reading
What is redundancy simple? June 14, 2022 “A special form of dismissal which happens when an employer needs to reduce the size of its workforce.” The reasons for redundancy can include… Continue Reading
Why is data redundancy not good? June 14, 2022 Data redundancy occurs when the same piece of data exists in multiple places, whereas data inconsistency is when the same data exists in different… Continue Reading
What are the 3 database anomalies? June 14, 2022 There are three types of anomalies that occur when the database is not normalized. These are – Insertion, update and deletion anomaly. Let's take… Continue Reading