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fixed length database
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∙ 13y ago
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What are the advantage of using fixed length fields instead of variable length fields in a database?
A fixed length field is one which contains a set number of characters.With fixed length fields, the fields may need to be padded out to the right length, eg with characters.eg If a Surname field is set at 10 characters then the name SIMPSON would need 3 s added on to the end of it.Advantage - Every record is the same size, so it is possible for the computer to calculate exactly where each record starts in the file and therefore it is quicker for the computer to find a particular record.
What do you call a symbol that can represent a quantity?
VARIABLE. When this variable has a fixed number assigned to it and does not change, it is called a "fixed variable".
Define fixed length fields?
Fixed length fields are columns in a database table that always use a set amount of space for each row of data in the table. A fixed length field of 50 characters will always consume 50 characters for that field, regardless of how long the actual data in that field requires. Fixed length fields typically use more storage resources than variable length fields, but they are a bit faster for the processor to work with, since the length only needs to be determined once. Fixed length fields are appropriate for data where the length is constant. Some examples of fields that are good candidates for fixed length fields include Social Security Numbers, fixed length postal codes/ZIP Codes and telephone numbers (provided international data is unexpected.) Data that varies in length should be stored in a variable length field, as it will take less physical storage space and will not need to be truncated to remove extra spaces.
What is the the variable costs plus the fixed costs?
Type your answer here... fixed cost + variable cost = total cost
What is the variable of 4 and 3 12th's?
There is no variable, only a fixed number.
What is fixed length record?
A fixed length record is a data structure that contains a standard amount fields, within the actual record.
What is fixed length?
A fixed length record is a data structure that contains a standard amount fields, within the actual record.
What is difference between fixed length record and variable length record?
A file where all the records are of the same length is said to have fixed length records.Advantage : Access is fast because the computer knows where each record starts.Eg If each record is 120 bytes long thenthe 1st record starts at [Start of File] + 0 bytesthe 2nd record starts at [Start of File] + 120 bytesthe 3rd record starts at [Start of File] + 240 bytes etc.....Disadvantage : Using Fixed length records, the records are usually larger and therefore need more storage space and are slower to transfer (load or save).One or more of the fields can be of differing lengths in each record, called variable length recordsAdvantages:the records will be smaller and will need less storage spacethe records will load fasterDisadvantages:The computer will be unable to determine where each record starts so processing the records will be slower.
What the advantages and disadvantages of using variable length instructions?
. fixed-length instructions · advantage: fixed-length instruction is fast and results in better performancewhen instruction levelpipelining is used. · Diadvantage: wastes space b. variable-length instructions · Advantage: Variable-length instruction saves storage space/ · Disadvantage: more complex to decode
What are the advantage of using fixed length fields instead of variable length fields in a database?
A fixed length field is one which contains a set number of characters.With fixed length fields, the fields may need to be padded out to the right length, eg with characters.eg If a Surname field is set at 10 characters then the name SIMPSON would need 3 s added on to the end of it.Advantage - Every record is the same size, so it is possible for the computer to calculate exactly where each record starts in the file and therefore it is quicker for the computer to find a particular record.
Difference between char and varchar datatypes?
Char is fixed length, while Varchar is variable length.
What are the types of subneting?
There r two types of subnetting flsm (fixed length subnet mask vlsm (variable length subnet mask)
What do you call a symbol that can represent a quantity?
VARIABLE. When this variable has a fixed number assigned to it and does not change, it is called a "fixed variable".
The difference between fixed and variable inputs?
difference between fixed and variable inputs
Define fixed length fields?
Fixed length fields are columns in a database table that always use a set amount of space for each row of data in the table. A fixed length field of 50 characters will always consume 50 characters for that field, regardless of how long the actual data in that field requires. Fixed length fields typically use more storage resources than variable length fields, but they are a bit faster for the processor to work with, since the length only needs to be determined once. Fixed length fields are appropriate for data where the length is constant. Some examples of fields that are good candidates for fixed length fields include Social Security Numbers, fixed length postal codes/ZIP Codes and telephone numbers (provided international data is unexpected.) Data that varies in length should be stored in a variable length field, as it will take less physical storage space and will not need to be truncated to remove extra spaces.
Is freight in a variable of fixed cost?
Variable
Is overtime pay fixed or variable?
Variable
