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Explain query execution plan?
- Optimizer available in SQL Server optimizes code to be effectively executed.
- A query execution plan demonstrates how this optimizer would run the query.
- Query execution plan can be viewed by:
- Using Show Execution Plan option available in Query Analyser,
- Displaying Estimated Execution Plan on query dropdown menu,
- Use SET SHOWPLAN_TEXT ON command before running a query and capturing execution plan event in a SQL Server Profiler trace.
What is object containment? References among objects can be used to model dissimilar real-world concepts.
What is magnetic disks?explain it? Magnetic disk provides the bulk of secondary storage of modern computer system. The disk capacity is growing at over 50% per year. But the st
What is OCR? OCR (Optical Character Recognition) is a technology that enables you to change different types of machine-readable documents, like scanned paper documents, PDF fil
Given the following set of functional dependencies {cf?bg, g?d, cdg?f, b?de, d?c} defined on R(b,c,d,e,f,g) a.Find a non-redundant cover. b.Find a canonical cover.
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
Mention various steps required to draw an E-R Diagram. Draw an E-R Diagram for Student Information System. Mention all suitable assumptions to justify your answer.
how to calculate frequency count of algorithm
Define the terms i) Entity set ii) Relationship set Entity set: The set of all entities of the similar type is termed as an entity set. Relationship set: The set of all rela
Explain Clustering file organization (i) Determine if a record of file is physically ordered on a nonkey field - that does not comprise a different value for each record - that
What is the use of a slotted-page structure and what is the information are there in the header? The slotted-page structure is used for organizing records within a one block.
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