Conceptual vs Logical Model Data modeling is one task that confuses many modelers because of the use of different designs of modeling. Three styles of data modeling that are very popular are conceptual, physical and logical models but because of many overlapping principles, people who wish to make use of any of these models remain […]
Difference Between Distributed Database and Centralized Database
Distributed Database vs Centralized Database Centralized database is a database in which data is stored and maintained in a single location. This is the traditional approach for storing data in large enterprises. Distributed database is a database in which data is stored in storage devices that are not located in the same physical location but […]
Difference Between Hierarchical and Partitional Clustering
Hierarchical vs Partitional Clustering Clustering is a machine learning technique for analyzing data and dividing in to groups of similar data. These groups or sets of similar data are known as clusters. Cluster analysis looks at clustering algorithms that can identify clusters automatically. Hierarchical and Partitional are two such classes of clustering algorithms. Hierarchical clustering […]
Difference Between DBMS and Data Mining
DBMS vs Data Mining A DBMS (Database Management System) is a complete system used for managing digital databases that allows storage of database content, creation/maintenance of data, search and other functionalities. On the other hand, Data Mining is a field in computer science, which deals with the extraction of previously unknown and interesting information from […]
Difference Between Data Mining and Query Tools
Data Mining vs Query Tools Query Tools are tools that help analyze the data in a database. They provide query building, query editing, searching, finding, reporting and summarizing functionalities. On the other hand, Data mining is a field in computer science, which deals with the extraction of previously unknown and interesting information from raw data. […]
Difference Between JDO and Value Object
JDO vs Value Object JDO is a Java persistence technology that can be used to store POJO (Plain Old Java Objects) in to databases without the need to understand the underlying implementations of different data stores. Value Object (also known as Data Transfer Object) is an abstract design pattern which introduces the concept of a […]
Difference Between Singly Linked List and Doubly Linked List
Singly Linked List vs Doubly Linked List Linked list is a linear data structure that is used to store a collection of data. A linked list allocates memory to its elements separately in its own block of memory and the overall structure is obtained by linking these elements as links in a chain. A singly […]
Difference Between Stack and Queue
Stack vs Queue Stack is an ordered list in which insertion and deletion of list items can be done only in one end called the top. Due to this reason, stack is considered as a Last in First out (LIFO) data structure. Queue is also an ordered list in which insertion of list items are […]
Difference Between Stack and Heap
Stack vs Heap Stack is an ordered list in which insertion and deletion of list items can be done only in one end called the top. Due to this reason, stack is considered as a Last in First out (LIFO) data structure. Heap is a special data structure that is based on trees and it […]
Difference Between Deferred Update and Immediate Update
Deferred Update vs Immediate Update Deferred Update and Immediate Update are two techniques used to maintain transaction log files of Database Management Systems (DBMS). Transaction log (also referred to as the journal log or the redo log) is a physical file that stores the Transaction ID, the time stamp of the transaction, the old value […]
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