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Data Storage Articles
Page 16 of 50
Difference between RAM and HDD
Both RAM and HDD are types of computer memory. RAM is used to store computer programs and data that the CPU needs in real time. RAM data is volatile and is erased once the computer is switched off. HDD, hard disk, has permanent storage and it is used to store userspecific data and operating system files. HDD data is static and remains in the computer even if computer is switched off. Read this article to find out more about RAM and HDD and how they are different from each other. What is RAM? RAM stands for Random Access Memory. ...
Read MoreDifference between Primary Key and Candidate key
Both Primary Key and Candidate key are used to get records from tables. These keys are also used to create relationships between tables. Both primary keys and candidate keys are used to identify the records uniquely in a table. Read this article to find out more about primary keys and candidate keys and how they are different from each other. What is a Primary Key? A primary key helps us to uniquely identify a record in a relational database. a primary key is a unique identifier for each record or row of data. It ensures that no two records ...
Read MoreDifference Between E-R Model and Relational Model in DBMS
In Database Management Systems (DBMS), the ways of designing databases at physical, logical, and view levels are referred to as Data Models. There are two popular data models− the ER Model and the Relational Model. The fundamental difference between the ER Model and the Relational Model is that the ER Model is an entityspecific data model, while the relational model is a table specific model. Read this article to find out more about the ER Model and the Relational Model and how they are different from each other. What is ER Model? ER Model, short for Entity Relationship Model, is ...
Read MoreDifference Between Data Warehouse and Data Mart
Both data warehouses and data marts serve the same purpose; they are data repositories. However, we can differentiate a data warehouse from a data mart on the basis of the amount of data they can store. A data warehouse a large repository of data that is collected from different organizations, whereas a data mart is a logical subset of a data warehouse. Read this article to find out more about data warehouses and data marts and how they are different from each other. Let's start with a basic overview of the two. What is a Data Warehouse? Data Warehouse is ...
Read MoreDifference Between Cardinality and Modality
For understanding the information domain of a problem, there are two data modelling concepts, namely, cardinality and modality. Cardinality and modality are very important for analyzing the data objects, attributes, and relationship structures. The most basic difference between cardinality and modality is that the cardinality is a metric that specifies the number of occurrences of a data object with respect to the number of occurrences of another data object, whereas, the modality specifies whether a data object must participate in a relationship or not. In this article, we will discuss the important differences between cardinality and modality. Let's start with ...
Read MoreDifference Between Program and Process
A program is a passive entity that has a set of codes and instructions required to accomplish a task. A process, on the other hand, is an active entity of a program that is started with the execution of the program. Thus, the process is started by the program, once it is executed. The instructions of the program are then executed by the process. Read through this article to find out more about programs and processes and how they are different from each other. What is a Program? A program is a set of instruction codes that has been designed ...
Read MoreDifference Between Soft Computing and Hard Computing
There are two types of computing methods namely, soft computing and hard computing. The basic difference between the two is that the hard computing is a conventional computing method which relies on the principles of certainty, accuracy, and inflexibility, on the other hand, the soft computing is a modern methodology that relies on the principles of approximation, flexibility, and uncertainty. In this article, we will discuss the important differences between soft computing and hard computing. But, before going into the differences, let's start with a basic overview. What is Soft Computing? Soft Computing is a modern computing model that ...
Read MoreDifference between GDPR and Privacy Shield
Online information is vulnerable to third parties' abuse, such as identity theft, fraud, and phishing schemes. The internet has provided countless new avenues for commerce and communication, but it has also made it simpler for identity thieves to target their victims. Thus, it is important to protect the sensitive data that many businesses, nonprofits, and governments have on file, such as loyalty program information, customer data, data collection, transaction details, and employee information. Several rules and regulations, like the General Data Protection Regulation and the Privacy Shield, have been adopted in various regions of the world to ensure this is ...
Read MoreDifference between Centralized Data Storage and Distributed Data Storage
The capacity to retain data is rapidly emerging as one of the most crucial features of contemporary business, government, and even personal life. Most successful companies have data storage systems that are properly organized, secure, and easy to access when necessary. Accounting records, policy documents, and human resources information, to mention a few examples, must be kept in a safe system that provides security against data loss and theft and has a reliable recovery method in place. Saving space and money through effective data storage is preferable to maintaining data in files or on a computer. Centralized data storage ...
Read MoreDifference between Magnetic Disk and Optical Disk
In a computer system, several types of secondary storage devices like HDD, CD, DVD, etc. are used to store permanent data and information. These devices can be categorized into two types namely – magnetic memory and optical memory. A magnetic memory like HDD consists of circular disks made up of non-magnetic materials and coated with a thin layer of magnetic material in which data is stored. On the other hand, optical disks are made up of plastic and consist of layers of photo-sensitive materials in which the data is stored using optical effects. A major advantage of the magnetic disk ...
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