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What is conceptual schema?
The schemas at the view level are known as subschema that describe dissimilar views of the database.
What are the disadvantages of file-processing system? Ans: The Disadvantages of File-Processing System a. Data redundancy and inconsistency - Data redundancy means not nece
explain the level architectures of the database management system
Question: A DBMS built for Online Transaction Processing (OLTP) is generally regarded as unsuitable for data warehousing. Each system is designed with a different set of requir
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
#question.ERD of any car
It can be easily defined as: The database must not have any unmatched foreign key values. The term "unmatched foreign key value" means a foreign key value for which there doe
Lock Based Protocol A lock is nothing but a mechanism that tells the DBMS whether a particular data item is being used by any transaction for read/write purpose. As there are t
What are the categories of SQL command? SQL commands are separated in to the following categories: 1. Data - Definitition Language 2. Data Manipulation language 3. Dat
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Hello.I have database access assignment which consist of creation Form, Subform, Calculation, Macros
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