information system means that a set of components that interact to achieve common goal.for businesses use many types of systems.there are 5 phases of system development cycle which is planning,analysing,design,implementation and operating,support and security.to develop the system we have to follow these phases one by one in order.so that there will no problem in developing new system.
there are 2 level of programming languages which is low-level languages and procedural languages.we can identify and differentiate between them.we can also develop web page.mostly for big companies.
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