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What is recursive closure? Why is it not possible to describe this operation in relational algebra?
Recursive closure is applied to recursive relationship. An instance of recursive operation is to retrieve all SUPERVISEES of an Employee e at all levels- which is , all EMPLOYEE e directly supervised through e; all employees e" directly supervised through each employee e" and so on .
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.
What are the ways in which signal can be generated A signal might be generated in many ways such as a Signal is result of particular physical condition. Whenever a process writ
I have one assignment that has to be done in neo4j
Horizontal Fragmentation- Horizontal fragmentation groups together the tuples in a relation that are collectively used by the main transactions. A horizontal fragment is produced b
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Should I select imaging software that allows changes? An imaging system should not give features to edit or alter images. Images generally are formed as safe and secure records
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
#question.explain diversity and magnitude of organic compounds and general properties?
What Is Sql? Structured Query Language (SQL) is a standard query language. It is usually used with all relational databases for data manipulation and definition. All the re
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