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What is relationship instance ?
Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.
Before we talk about the relational model in more detail, let us first define some very basic terms used in this model. Tuple Every row in a table shows a record and is cal
Express the following queries in SQL: (a) Write the SQL code that will create ALL the four tables given in the appendix. Your answer should not contain the primary key and
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
Describe the host language? Host Language: You could write applications along with SQL statements embedded inside a host language. The SQL statements give the database inter
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Explain the difference between using functions along with and without grouping attributes in relational algebra. Give examples. Ans: Group functions are used to group data of
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant application
By which techniquesTransaction processing is associated? Transaction processing is associated by producing detail, summary, or exception reports and recording a business activi
A Data Model in software engineering is an abstract model that organizes and documents the business data for interaction between team members and is used as a plan for creating
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