There are three main service models of cloud computing – Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). There are clear differences between the three and what they can offer a business in terms of storage and resource pooling, but they can also interact with each other to form one comprehensive model of cloud computing.
aaS (Infrastructure as Service)
This is the most common service model of cloud computing as it offers the fundamental infrastructure of virtual servers, network, operating systems and data storage drives. It allows for the flexibility, reliability and scalability that many businesses seek with the cloud, and removes the need for hardware in the office. This makes it ideal for small and medium sized organisations looking for a cost-effective IT solution to support business growth. IaaS is a fully outsourced pay-for-use service and is available as a public, private or hybrid infrastructure.
PaaS (Platform-as-a-Service)
This is where cloud computing providers deploy the infrastructure and software framework, but businesses can develop and run their own applications. Web applications can be created quickly and easily via PaaS, and the service is flexible and robust enough to support them. PaaS solutions are scalable and ideal for business environments where multiple developers are working on a single project. It is also handy for situations where an existing data source (such as CRM tool) needs to be leveraged.
SaaS (Software as a Service)
This cloud computing solution involves the deployment of software over the internet to variousbusinesses who pay via subscription or a pay-per-use model. It is a valuable tool for CRM and for applications that need a lot of web or mobile access – such as mobile sales management software. SaaS is managed from a central location so businesses don’t have to worry about maintaining it themselves, and is ideal for short-term projects.
One gallon is 3.7854 liter so 4 liters are more than one gallon.
All I will say is good luck. because it can be very difficult to find someone that is willing to do this.
Database management systems are used to store and to access information.
In <span>the Relational Database Management System </span>(RDBMS), all the data is in the form of simple columns and rows in a table. Structured Query Language (SQL) is is the standard query language for RDBMS. Some of the disadvantages of RDBMS are: not enough storage area to handle data such as images, digital and audio/video, do not provide good support for nested structures,not much efficient and effective integrated support.
<span>The
term object oriented database management systems (OODBMS) refers to a wide variety of different database technologies
that were developed in order to overcome some of the limitations of
relational databases.</span>
