LeeBlog2022

SOFTWARE REQUIREMENTS Software requirements for a system are the description of what the system should do, the service or services that it provides, and the constraints on its operation.  STAKEHOLDERS A stakeholder is a member of "groups without whose support the organization would cease to exist", as defined in the first usage of the word in a 1963 internal memorandum at the Stanford Research Institute. The theory was later developed and championed by R. Edward Freeman in the 1980s. CONTEXT DIAGRAM A system context diagram in engineering is a diagram that defines the boundary between the system or part of a system, and its environment, showing the entities that interact with it. This diagram is a high-level view of a system. It is similar to a block diagram. USE CASE MODEL A use case diagram is a graphical depiction of a user's possible interactions with a system. A use case diagram shows various use cases and different types of users the system has and will often be acc...

 Fields A collection of related character. It is the smallest unit of information that has meaning to the user and can consist of one character.  Each field gives the value of some property (or attribute) of the entity represented by a record. For example, a personnel file may contain a series of records, one for each individual in the organization, and each record would contain fields that contain that person’s name, address, phone number, e-mail address, and so forth  Records A record is a collection of related fields. A student depending on the type of character the field will contain. It is a group of fields within a table that are relevant to a specific entity. For example, in a table called customer contact information, a row would likely contain fields such as: ID number, name, street address, city, telephone number and so on. Files A collection of records. Application creates files or modify existing ones to holds data which will later be processed into usabl...

  Fortran, C, Pascal are individual programs in the High-Level Language category, in which the programming language with strong abstraction from the computer details. Below that is the Assembly Language, often referred to simply as Assembly and commonly abbreviated as ASM or asm, which is any low-level programming language with a powerful correspondence between the instructions in the language and the architecture's machine code instructions. The Assembly Language statement is a line of text that translates into a single machine instruction. Assembly Language is expressed in a more human readable form than the binary instructions and names are allowed for memory locations, registers, operations, etc. This leads to the transition to machine language; They are any low-level programming language, consisting of machine language instructions, which are used to control a computer's central processing unit. It is the elemental language of computers. It is read by the comput...