Hi: My question is based on the instruction as follows, how do you decide the header length?
Can I say the header length is simply as 4+4+2=10?
Thanks very much!
Start of file 4 byte numeric - magic cookie 4 byte numeric - length of the record 2 byte numeric - number of fields in each record
Schema Description 2 byte numeric - length in bytes of field name n bytes - field name 2 bytes numeric - field length in bytes repeat the above for every field in the record Data Section 1 byte delete flag - 00 valid record, 0xFF deleted record Record contains fields in the order specified, no seperators bet fields, each field is fixed length at maximum specified in schema information
End of file
posted 10 years ago
It depends what you consider to be the "header". I use the term "header" for the portion of the file starting at the beginning of the file, up to the start of the first record. That is, the header includes the schema description section.