Difference Between Clustering and Classification

Difference Between Clustering and Classification

Key Difference – Clustering vs Classification   Though clustering and classification appear to be similar processes, there is a difference between them based on their meaning. In the data mining world, clustering and classification are two types of learning methods. Both these methods characterize objects into groups by one or more features.The key difference between […]

Difference Between Char and Varchar

Difference Between Char and Varchar

Char vs Varchar   Char and Varchar are commonly used character data types in the database system that look similar though there are differences between them when it comes to storage requirements. In database designing,  there are a lot of data types used. Out of them, character data types get a more prominent place as they are used to […]

Difference Between Database and Data Warehouse

Difference Between Database and Data Warehouse

Database vs Data Warehouse   The basis for the difference between a database and a data warehouse arises from the fact that a data warehouse is a type of database that is used for data analysis. A database is an organized collection of data stored on a computer system. Information about students, teachers, and classes […]

Difference Between Primary Key and Candidate Key

Difference Between Primary Key and Candidate Key

Primary Key vs Candidate Key   Though primary key is selected from the candidate keys there exist some difference between the primary key and the other candidate keys, which will be discussed in detail in this article. Database designing is one of the most important activity that should be done when maintaining and storing data. During […]

Difference Between Varchar and Nvarchar

Difference Between Varchar and Nvarchar

Varchar vs Nvarchar   The difference between varchar and nvarchar indicates how data are stored in a database. A database system consists of data and data is defined by data types. A data type tells that what kind of value a column may contain. Each column in a database table must have a name and a […]

Difference Between Logical and Physical Data Model

Difference Between Logical and Physical Data Model

Logical vs Physical Data Model   Before discussing the difference between logical and physical data model, we must know what a data model is. A data model is a representation that describes the data and the relationships among them for a certain process. A data model is an essential component used during database design. Logical data […]

Difference Between Oracle Standard Edition (SE) and Enterprise Edition (EE)

Oracle Standard Edition (SE) vs Enterprise Edition (EE)   ORACLE database products are in five different editions. Each of these editions has a set of features related to performance, availability, scalability, and security areas. ORACLE EE contains all of those features and other editions have lesser features set. Here, are the available editions, 1. ORACLE […]

Difference Between BCNF and 4NF (4th Normalization)

BCNF vs 4NF (4th Normalization)   Database normalization is a technique, which is dealing with relational database management systems. Data errors can be avoided in a well normalized database. Normalization is used to reduce the data redundancy of the database. That means implementing database tables and their relationships, eliminating redundancy and inconsistent dependency. There are […]

Difference Between ORACLE Export (exp) and Datapump (expdp)

ORACLE Export (exp) vs Datapump (expdp)   ORACLE provides two external utilities to transfer database objects from one database to another database. Traditional exports (exp /imp) are introduced before 10g. Then from 10g, ORACLE introduced datapump (expdp / impdp) as an enhancement to traditional export utility. Traditional Export (exp/ imp) This is an ORACLE database […]