Bit. The smallest item of data is a single binary digit (a bit), either 0 or 1.
Character. Multiple related bits are combined to form a character. A bit is the basic unit of primary and secondary storage, and a character is the basic unit for human conception.
Field. It’s a meaningful collection of related characters.
Record. Multiple related fields are combined to form a record.
File. Multiple related records are combined to form a file. A file is a number of related records which are treated as a unit. Every record in a file has the same set of fields. Each record in a file is identified, for storage and retrieval purpose, by a key field whose contents are unique for each record in a file. In case of an employee file, employee-code field may serve as the key. In case of an employee file, employee-code field may serve as the key field.
Database. Multiple related files are integrated to form a database. A database is a collection of logically related data elements from multiple files.
Steve ju answered the question on June 6, 2018 at 20:26
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#include
using namespace std;
class myclass {
public:
myclass();
myclass(const myclass &o);
myclas f();
};
// Normal constructor
myclass::myclass()
{
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Answers (1)
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