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How are tables stored on Disk?
We realise that every record of a table can have different amounts of data. This is due to in some records; some attribute values may be "zero". Or, some attributes might be of type varchar (), and thus each record may have a dissimilar length string as the value of this attribute. Thus, the record is stored with each subsequent attribute splitted by the next by a special ASCII character known as a field separator. Of course, in every block, we may place several records. Every record is separated from the next, again by another special ASCII character known as the record separator.
Determine the concept of Process Process: A process transforms the data values. It is represented as ellipse containing a description of transformation. Each procedure has a
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create an er diagram for production management in film industry
what is database management system? & why it is required?
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
How many types of users works on database? Users are differentiated through the way they expect to interact along with the system (i) Application programmers-interact with
why data in an RDMS need to be normalised
what do you understand by enhanced entity-relationship
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
write program
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