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explain participation constraints with examples
Increased parallelism : Since the replicated date has several copies a query can be distributed or can be answered from the smallest loaded site. Also, with more replicas you have
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
What is a guard condition? Explain it with a suitable example. The guard-condition is a Boolean expression written with respect to parameters of triggering event and attributes
What is a database? Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users
describe all the tables you have created. ?get table_name, status, num_rows, user_stats in user_tables system view ?get table_name, constraint_name, constraint_type in user_constr
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
Company Database: a-)Here is the ER Model b-)Here is the Relational Model: IMPORTANT NOTICE FOR SOLUTION TYPE: ***THIS ASSIGNMENT WILL BE SOLVED BY THE
Explain how the object classes are mapped to tables. Each object class maps to one or more than one tables in the database. The objects in the class may be partitioned horizont
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