Sql Interview Question and Answers:
125. What is a data model?
It is a collection of concepts that can be used to describe the structure of a database. It provides necessary means to achieve this abstraction. By structure of a database we mean the data types, relations, and constraints that should hold on the data.
126. What are types of schema?
Internal schema
Conceptual schema
External schema
127. What are different types of DBMS?
DBMS
RDBMS (Relational)
ORDBMS (Object Relational)
DDBMS (Distributed)
FDBMS (Federated)
FDBMS (Federated)
HDBMS (Hierarchical)
NDBMS (Networked)
125. What is a data model?
It is a collection of concepts that can be used to describe the structure of a database. It provides necessary means to achieve this abstraction. By structure of a database we mean the data types, relations, and constraints that should hold on the data.
126. What are types of schema?
Internal schema
Conceptual schema
External schema
127. What are different types of DBMS?
DBMS
RDBMS (Relational)
ORDBMS (Object Relational)
DDBMS (Distributed)
FDBMS (Federated)
FDBMS (Federated)
HDBMS (Hierarchical)
NDBMS (Networked)
Having a wedding under one roof means the Bride and Groom can slope off to the Bridal suite after the cutting of the cake and the first dance, once the evening guests have arrived, if they want to get changed. The Bridal suite is also available for the Bride to get ready in, with hair and make up artists coming to you, or the Bride could travel from her home putting her dress on last minute to ensure it's wrinkle free. Bouquets and buttons holes can be derived to the venue, meaning less stress for the Bride trying to remember who is doing what and where everything will be.
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