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What are the Constituents of File? Also elaborates all the possible file operations?
A file is organised logically as sequence of record. These records are mapped onto disk blocks. Although blocks are of fixed size denoted through the physical properties of the disk and through the operating system, record sizes vary. In a relational database, tuples of distinct relations are commonly of different sizes.
Possible operations on a file: (i) Create: a file can be created (ii) Delete: a file can be deleted (iii) Changing attributes of a file: The attributes of a file say read only, author's name etc. can be changed. (iv) Contents of the file can be altered.
Critically explained the benefits and limitations of different database technologies with proper examples
What three major types of actions includes databases? Briefly discuss these The three major types of actions including databases are: (i) Defining: It includes specifyin
What is meant by object identifiers? Object-oriented systems use an object identifier to recognize objects. Object identifiers are unique: that is every object has a single ide
Depending upon the rules we have found, we can classify the locks into two types. Shared Lock: A transaction might be acquiring shared lock on a data item in order to read it
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
we need example of 2phase locking
Differentiate between the object oriented decomposition and the structured decomposition? Process-oriented (structural) decomposition divides a complex process, function or tas
Determine the Objectives of object oriented design provide an overview of object oriented design; partitioning system to subsystems; describe how a software desig
1. Will you advise that your organization uses open source software and why? 2. Why is it important for business managers to have a basic understanding of the software development
What is advantage of two-way association? Two-way association advantages are following: a) Independent of the classes. b) Useful for existing predefined classes that are
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