Difference between fixed length coding and variable length coding
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This corresponds to a fixed-to-variable length code that encodes each word of fixed length by a codeword . A variable-to-fixed length code is a code that takes a string in , breaks it into pieces of variable length, and replaces each piece into a word of fixed length.
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Fixed length and variable length coding:
• Fixed length means having a set length that never differs.
• In database systems, a field can have a variable or a fixed length.
• A variable-length field is one whose length can be altered in each record, depending on what data is stored in the field.
• A code in which a fixed number of source symbols are determined into a fixed number of output symbols is called fixed length coding.
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