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Explain What is Relation?
A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.
Cardinality shows the number of instances of an entity associated with another entity participating in a relationship. Depend on the cardinality binary relationship can be further
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
List any two significant differences between a file processing system and a DBMS. File Processing System vs. DBMS Data Independence - Data independence is the capacity t
explain the steps for reduction of er model into relational model?
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
What are the two approaches to store relations in distributed database? a) Replication b) Fragmentation
Redo Logs: Any database must have minimum two redo logs. These are the rules for the database; the redo logs record all modifies to the system objects or user objects. If any type
Define tuple variable? Tuple variables are used for comparing two tuples in the same relation. The tuple variables are explained in the from clause by way of the as clause.
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