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Consider the E/R schema with weak entity sets shown below. Come up with the SQL CREATE TABLE statements (with appropriate primary key, unique and foreign key constraints). Include the SQL statements and appropriate screen shots showing that your CREATE TABLE statements succeeded into your submission document
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
sql is relationally complete-justify
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
construct a b-tree for the following set of key values 2,3,5,7,11,17,19,23,29,31.assume that the tree is initial empty and the values are added in ascending order
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
What is NULL? Simply NULL means not in value.
Define Cascading rollback The phenomenon where a single transaction failure leads to a series of transaction rollbacks is known as Cascading rollback.
explain the steps for reduction of er model into relational model?
What is disadvantage of multiple inheritances? There is potential ambiguity if the similar variable or method can be inherited from more than one superclass.eg: student class m
We face problem of stock Opening balance and closing balance in Minus
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