A null bitmap is used in the variable-length record representation to indicate if an attribute has a null value. Tuples can have a significant number of characteristics in some applications, the majority of which are null. Is it possible to change the record representation so that the single bit in the null bitmap is the only overhead for a null attribute?

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Properties of different architectures

Software architectures are the blueprint of a software system. They consist of all components involved in a system, relations between various components, the environment of operation, and the principle used in designing the software. In other words, software architecture shows the organization of different software structures and helps understand their behavior.