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What is the most significant feature that does not directly map into programming language structures? Why?
Association, since there are complex types of association, like as qualified associations and association classes that are very difficult to implement.
Define Timestamp ordering Ans In timestamp-based method, a serial order is made among the concurrent transaction by assigning to every transaction a unique nondecreasing number
Unrepeatable reads : Assume T7 reads X twice during its implementation. If it did not update X itself it could be very disturbing to see a dissimilar value of X in its next read. B
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
I have one assignment that has to be done in neo4j
Given the subsequent relations: vehicle (reg_no, make, colour) Person (eno, name, address) Owner (eno, reg_no) Write expressions
how many hourse have been spent on a certain project
external and internal mapping with examples
what is cascading rollback
1. Will you advise that your organization uses open source software and why? 2. Why is it important for business managers to have a basic understanding of the software development
Explain data independence ? Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level.
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