Explain cloud computing architecture with diagram.

 CLOUD COMPUTING ARCHITECTURE

  • The cloud infrastructure is closely related to its architecture & comprises many cloud components which are loosely connected. The broad divisions of cloud architecture are:

  1. Front-end
  2.  Back-end

  • It is the responsibility of the back end to provide the security of data for cloud users along with the traffic control mechanism. The server also provides the middleware which helps to connect devices & communicate with each other.
  • Businesses used cloud infrastructures to work with these applications. Unlike subscription-based models of pricing, the payment structure of the cloud enables the user to subscribe to vendor services & cloud infrastructures are paid on a 'pay-per-use basis.

  • The cloud technology architecture also consists of front-end platforms called the cloud client which comprises servers, thin & fat clients, tablets & mobile devices. The interaction is done through middleware or via a web browser or virtual sessions. According to Jason Bloomberg of ZapThink, the cloud-oriented architecture can essentially be the building block of IoT (Internet of Things) in which anything can be connected to the Internet. Cloud architecture is a combination of both services-oriented architecture & event-driven architecture. So, cloud architecture encompasses all elements of the cloud environment.

Comments

Popular posts from this blog

Suppose that a data warehouse for Big-University consists of the following four dimensions: student, course, semester, and instructor, and two measures count and avg_grade. When at the lowest conceptual level (e.g., for a given student, course, semester, and instructor combination), the avg_grade measure stores the actual course grade of the student. At higher conceptual levels, avg_grade stores the average grade for the given combination. a) Draw a snowflake schema diagram for the data warehouse. b) Starting with the base cuboid [student, course, semester, instructor], what specific OLAP operations (e.g., roll-up from semester to year) should one perform in order to list the average grade of CS courses for each BigUniversity student. c) If each dimension has five levels (including all), such as “student < major < status < university < all”, how many cuboids will this cube contain (including the base and apex cuboids)?

Pure Versus Partial EC

Suppose that a data warehouse consists of the three dimensions time, doctor, and patient, and the two measures count and charge, where a charge is the fee that a doctor charges a patient for a visit. a) Draw a schema diagram for the above data warehouse using one of the schemas. [star, snowflake, fact constellation] b) Starting with the base cuboid [day, doctor, patient], what specific OLAP operations should be performed in order to list the total fee collected by each doctor in 2004? c) To obtain the same list, write an SQL query assuming the data are stored in a relational database with the schema fee (day, month, year, doctor, hospital, patient, count, charge)