Frequently Asked Questions
Blockchain is an existing technology of about nine years and already has an important impact on the world economy. When it comes to transactions involving money, the elimination of intermediaries is not only cost-effective but also more secure, as has been proven many times. Besides sending and receiving money, the blockchain has already begun to produce a lot of changes in various areas, especially in the investment sector.
As it relates to the two-party transactions, today we have trusted brokers or intermediaries between the process, making the transaction cumbersome, time consuming and inaccessible. Moreover, adding a third party to the mix means that the transaction is not as fluid and as simple as it should be. The idea of creating a trustworthy economy is, in essence, how we can now use the blockchain to be that intermediary.
The first recorded use of blockchain technology is that of Bitcoin, a form of digital currency. Taking advantage of the distributed accountancy concept of blockchain technology, Bitcoin eliminates the risk that a digital money will be “spent” on several occasions, a problem that needs to be solved for digital coins to become mainstream. But the utility of blocks is not limited to Bitcoin or any other form of digital currency. In fact, many organizations and industries are now taking advantage of blockchain technology.
By allowing the distribution of digital information, but without copying, blockchain technology has created the backbone of a new type of internet.
- What is a smart contract?
A smart contract is a protocol for contract regulation. A smart contract is a special protocol designed to help, verify or implement the negotiation or execution of the contract. Smart contracts allow for reliable third-party transactions. These transactions are traceable and irreversible. Intelligent contracts contain all the information about the terms of the contract and automatically execute all the actions under consideration.
- How did smart contracts emerge?
The idea was originally described by the scientist and cryptographer Nick Szabo in 1994. He defined the main principles of work, but at that time there was no suitable environment to achieve them. A lot has changed since the advent of Blockchain technology. Bitcoin laid the foundation for contracting on the block of flats. However, his tools could not meet all the needs. The appearance of Ethereum put into operation the intelligent contracts for everyone, giving a further impetus to understanding.
- How do smart contracts work?
The principle principle can be compared to the activity of automated machines. They only execute the instructions given to them automatically. From the beginning, the assets and contractual terms are encoded and placed in the block of a block of blocks. This contract is distributed and copied multiple times between platform nodes. After the trigger, the contract is made in accordance with the contractual terms. The program automatically checks the implementation of the commitments.
- Why do I need to create a smart contract?
To create a smart contract, you need:
– Subject of the contract: The program must have access to contract goods or services to lock and unlock them automatically.
– Digital signatures: All participants initiate an agreement by signing the contract with their private keys.
– Terms of the contract: The terms of a smart contract take the form of an exact sequence of operations. All participants must sign these terms.
– Decentralized platform: The Intelligent Contract is implemented in the Blockchain of this platform and distributed between platform nodes.
- What are the benefits of smart contacts?
Intelligent contracts use all the benefits of Blockchain technology. They offer:
– Economy and speed
- Where can I create a smart contract?
Currently, smart contracts are implemented in most blocks to varying degrees. Different projects facilitate smart contract implementation. These vary according to their possibilities, the diversity of smart contract templates, the necessary programming skills. Nowadays, platforms like Confideal are improving and developing to:
– Full transaction support
– Being suitable for non-programmers
– Availability of arbitration
- Where can smart contracts be used in real life?
Intelligent contracts can be applied in different areas.Elections
The results of the voting will be placed in block and distributed between the nodes of the network. All data is encrypted and anonymous. This method eliminates any possibility of manipulation with the ballot.Logistics
The supply chain is generally long and includes a lot of links. Each link must obtain a confirmation from the previous one, reserve the end of the contract and send the information further. It takes a lot of time and is unproductive, while with a smart contract each participant can see progress and do the work on time. Smart contracts ensure transparency in terms of contract, fraud protection. It can also provide transports to track Internet objects integration. There are other possible applications, ie management, banking, insurance, real estate, IOT and others.
A website is made up of a series of files that must be kept on a server for access by any user. And this is possible with the help of a web hosting service. In other words, web hosting is equivalent to renting a space on a server for a certain period of time.
The server must be connected to the Internet and its choice depends on the language that was used to create the website. For example, if you are the owner of a dynamic site, and it uses a management system like MYSQL, make sure the server allows it.
Why is it simpler to use hosting instead of buying a server:
• Less headaches. It is much easier, knowing that you only have to pay a certain fee (monthly / yearly), and then you can forget about the rest of the worries. • Better performance of hosting servers.
• Better Internet bandwidth. If your plan is to have thousands of visitors one day, you definitely need an Internet band to meet the challenges. And homework will not be enough.
• A web hosting company can automatically back up. Backup means the ability to recover files stored on that server, if something goes wrong.
Therefore, you need to look for a company that offers space on a server to host your site. There are four types of hosting: shared (shared), VPS, Cloud, and Dedicated.
Shared hosting or shared hosting means that your website is placed on the same server alongside other sites. Typically, costs for such a package are low, but this option is especially recommended for blogs and moderate traffic sites.
VPS hosting means that the website is hosted on a part of a virtual server, as if you had your own dedicated server. But in reality you share a server with another group of users.
Dedicated Hosting is the most recommended option because it gives you maximum control over the server on which the website is stored. Also, your website is the only one on that server.
Cloud hosting has the advantage of managing an extremely high level of traffic. That is, there is a team of several servers that work together to host a group of websites.
Search Engine Optimization (SEO) is the process of improving the volume or quality of traffic of a website through search engines. SEO is an abbreviation for “search engine optimization”. We also use the terms “site optimization” and “SEO optimization.” As a site is better positioned on the search engine result pages, the more visitors it will have.
SEO can target different types of search: image search, local search, video search, books, discussions, blogs, news.
Optimizing the visibility of a website on search engines is the presence of the site in all these types of searches. As an Internet marketing strategy, SEO takes into account the way search engines work and what people are looking for on the Internet.Webmasters and content providers have begun to optimize search engine sites since the mid-1990s, when the early search engines cataloged the early Web site.
SEO offers site owners 4 basic benefits:
– Indexing pages
– Rankings: Positioning the site as best as possible on keywords that bring traffic
– Conversions (secondary benefit)
No business, especially B2C, can afford to ignore the social environment. However, the results will be more and more difficult to achieve. If you are not a big brand and you do not have a marketing budget of hundreds of thousands or millions of euros, you have no chance to bring tangible marketing results through a wide-ranging campaign to everyone.
The costs of promotion paid on social networks will increase, the organic impact will decrease. This is the reality. There are days when a business can start posting on Facebook and customers start coming in. To get a positive return on marketing investment, and to make the most of the potential of these platforms, you need to have a poorer strategy, more segmented.If we’re talking about targeting the audience, using new ad mediums (Messenger / Groups), or new technologies such as bots, you need to think about promoting in more specific terms.
.NET is a free, cross-platform, open source developer platform for building many different types of applications. With .NET, you can use multiple languages, editors, and libraries to build for web, mobile, desktop, gaming, and IoT.
PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.
Instead of lots of commands to output HTML (as seen in C or Perl), PHP pages contain HTML with embedded code that does “something” (in this case, output “Hi, I’m a PHP script!”). The PHP code is enclosed in special start and end processing instructions that allow you to jump into and out of “PHP mode.”
Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible. It is intended to let application developers “write once, run anywhere” (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation.Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of computer architecture. As of 2016, Java is one of the most popular programming languages in use,particularly for client-server web applications, with a reported 9 million developers. Java was originally developed by James Gosling at Sun Microsystems(which has since been acquired by Oracle Corporation) and released in 1995 as a core component of Sun Microsystems’ Java platform. The language derives much of its syntax from C and C++, but it has fewer low-level facilities than either of them.
Angular lets you use HTML as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly. Angular’s data binding and dependency injection eliminate much of the code you would otherwise have to write. And it all happens within the browser, making it an ideal partner with any server technology.
Angular attempts to minimize the impedance mismatch between document-centric HTML and what an application needs by creating new HTML constructs. Angular teaches the browser new syntax through directives, such as:
- Data binding
- DOM control structures for repeating, showing and hiding DOM fragments
- Support for forms and form validation
- Attaching new behavior to DOM elements, such as DOM event handling
Microsoft SQL Server
Microsoft SQL Server is a relational database management system, or RDBMS, that supports a wide variety of transaction processing, business intelligence and analytics applications in corporate IT environments. It’s one of the three market-leading database technologies, along with Oracle Database and IBM’s DB2.
Like other RDBMS software, Microsoft SQL Server is built on top of SQL, a standardized programming language that database administrators (DBAs) and other IT professionals use to manage databases and query the data they contain. SQL Server is tied to Transact-SQL (T-SQL), an implementation of SQL from Microsoft that adds a set of proprietary programming extensions to the standard language.
MySQL is a relational database management system produced by Swedish MySQL AB and distributed under the GNU General Public License. It is the most popular open-source SGBD currently, being a key component of the LAMP stack (Linux, Apache, MySQL, PHP).
Although it is used very often along with the PHP programming language, MySQL can build applications in any major language. There are many available MySQL APIs that allow you to write applications in many programming languages to access MySQL databases, such as: C, C ++, C #, Java, Perl, PHP, Python, FreeBasic, etc. a specific API type. An ODBC interface called MyODBC allows other programming languages that use this interface to interact with MySQL databases such as ASP or Visual Basic. In support of these programming languages, some companies produce COM / COM + or .NET (for Windows) components by means of which these languages can use this SGBD much easier than through the ODBC system. These components may be free (such as MyVBQL) or commercial.
WHAT IS POSTGRESQL?
PostgreSQL is a powerful, open source object-relational database system that uses and extends the SQL language combined with many features that safely store and scale the most complicated data workloads. The origins of PostgreSQL date back to 1986 as part of the POSTGRES project at the University of California at Berkeley and has more than 30 years of active development on the core platform.
PostgreSQL has earned a strong reputation for its proven architecture, reliability, data integrity, robust feature set, extensibility, and the dedication of the open source community behind the software to consistently deliver performant and innovative solutions. PostgreSQL runs on all major operating systems, has been ACID-compliant since 2001, and has powerful add-ons such as the popular PostGIS geospatial database extender. It is no surprise that PostgreSQL has become the open source relational database of choice for many people and organisations.