In the variable-length record representation, a null bitmap is used to indicateif an attribute has the null value. For variable-length fields, if the value is null, what would be stored in the offset and length fields?
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In the variable-length record representation, a null bitmap is used to indicate
if an attribute has the null value. For variable-length fields, if the value is null, what would be stored in the
offset and length fields?
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- The variable-length record format uses a null bitmap to show if an attribute has a null value. If the value is null, what would go in the offset and length fields for variable-length fields?The variable-length record format uses a null bitmap to show whether an attribute has a null value or not. If the value of the field in this instance is null, what would be put in the offset and length fields of variable-length fields?Exactly what does it mean when someone refers to the Dataset object?
- What does it mean when something is a Dataset object?A null bitmap is used in the variable-length record format to indicate that an attribute has no value. In a few odd cases, the majority of a tuple's properties are null. It is possible to minimise the cost of a null attribute to a single bit by modifying the way records are represented.The null bitmap is used in the variable-length record format to indicate that a certain attribute is empty. In certain odd situations, a tuple may have most or all of its properties set to null. The overhead of a null attribute may be reduced to a single bit by changing the method in which records are represented.
- 37. The RDBMS terminology for a row is a. tuple b. relation c. attribute d. degreeA null bitmap is used in the variable-length record format to indicate if an attribute has a null value. In rare cases, the majority of a tuple's properties are null. To minimize the cost of a null property to only a single bit, it is possible to change how records are represented.How do serialization techniques help in minimizing data redundancy when working with nested objects?
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