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Question
(a) Visual Basic is governed by an event processor. Explain the meaning of this phrase.
(b) Differentiate between an general procedure and event procedure.
(c) Write short notes on the following Visual basic errors:
(i) Syntax errors (ii) Run-time errors (iii) Logic errors.
(d) A Visual Basic application cannot directly interact with a database. There are two intermediate components between the application and the database. Using an appropriate diagram explain in details the two components.
(e) The ADO (ActiveX Data Object) data control is the primary interface between a Visual Basic application and a database. Explain the following properties associated with the ADO data control:
i. Command Type ii. Connection String iii. RecordSet iv. RecourdSource
Cardinality of Relationship One-to-One Only one entity of the first set is linked to only one entity of the second set. E.g. A teacher teaches a student. Only one teacher
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Define instance and schema? Instance: Collection of data stored in the data base at a certain moment is Schema: The overall design of the data base is known as the data base
Question: (a) What are the challenges in the development of Large Scale Distributed Real Systems? (b) What is backward engineering and forward engineering in a design packa
what are the type of the database
Database systems have many opposite efforts ?
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What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
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