Normalization of a relational data schema (table structure) is the division of attributes (table columns) into several relations (tables) according to the normalization rules (see below) so that a form is created that no longer contains redundancies. A conceptual schema that contains data redundancies can result in changes to the database; it realizes not to change the multiple data contained … [Read more...]
Cloud Computing
Cloud computing is becoming more and more important. Here are articles on Cloud Computing,Cloud Server,SaaS,PaaS,IaaS and Cloud related technology.
How Algorithmic Strategies Can Help With Your Trading
Every trader has their own preferred way of trading the markets, but algorithmic strategies have the potential to help with them all. Also known as black-box or automated trading, algorithmic strategies involve the use of technology to respond to market conditions far more quickly than a human could. Automated or algorithmic trading colloquially refers to the automatic trading of securities by … [Read more...]
How Can a Firewall can Protect Your Company?
A firewall is your first line of defence against online threats, and it’s an important feature of any cybersecurity strategy. As a business owner, you need to be aware of the damage that cyberattacks can have against your business and ensure the right measures are in place to stop them. Firewalls are a useful tool for preventing unauthorized access to your network and protecting your company’s … [Read more...]
What is a Snowflake Schema?
The snowflake scheme is a continuation of the star scheme used in OLAP and data warehousing. With the star schema, the dimension tables are denormalized, which results in better processing speed at the expense of data integrity and storage space. In contrast, the snowflake scheme refines the individual dimension tables by classifying or normalizing them. This branching of the data model creates … [Read more...]
What is Star Schema?
A star schema is a special form of a data model whose goal is not normalization, but optimization for efficient read operations. The main field of application is a data warehouse and OLAP applications. The term star schema comes from the fact that the tables are arranged in a star shape: at the centre is a fact table around which several dimension tables are grouped. A star scheme is usually … [Read more...]
What is Object-Relational Mapping?
Object-relational mapping (ORM) is a software development technique that allows an application program written in an object-oriented programming language to store its objects in a relational database. The database then appears to the program as an object-oriented database, which facilitates programming. This technique is usually implemented with class libraries, such as Entity Framework for .NET … [Read more...]
The Critical Role of Big Data in Current Decision-Making Processes
In the digital world, where automation and advanced technologies are the new norms, a lot of data is generated. Internet of Things (IoT) devices and smart machines generate industry-specific and real-time data sets that were untapped a decade ago. Forward-looking organizations and businesses are now leveraging these data sets to derive insights and a new form of knowledge that can aid … [Read more...]
How to install ClickHouse Database on Ubuntu Server
ClickHouse is a free column-oriented database software (DBMS) for online analytical processing (OLAP). ClickHouse was developed by the Russian company Yandex for the web analysis service Yandex. ClickHouse allows the analysis of updated data in real-time. This system is developed for high performance. The project was released as free software under the terms of the Apache License in June 2016. … [Read more...]
What is Information Integration
Information integration is the merging of information from different data sets (data sources) with usually different data structures into a common uniform data structure. In this process, heterogeneous sources are to be brought together as completely and efficiently as possible into a structured unit that can be used more effectively than would be possible with direct access to the individual … [Read more...]
What is Data Processing?
Data processing (DV) refers to the organized handling of data volumes with the aim of obtaining information about these data volumes or changing these amounts of data. Data is recorded in data sets, processed by humans or machines according to a given procedure and output as a result. Systematic data processing is the basis for statistics, trade, technology, business, science and … [Read more...]
What is Batch Processing?
Batch processing is a term used in data processing and refers to the way computer programs work in which the amount of tasks or data provided as input in one or more data sets is processed completely, automatically and usually sequentially. The complementary form of processing is called "dialogue processing". The program processes exactly one operation (a transaction), which is usually initiated … [Read more...]