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List the string operations supported by SQL?
1) Pattern matching Operation
2) Concatenation
3) Extracting character strings
4) Converting among uppercase and lower case letters.
WHAT IS DATABASE TECHNOLOGIES
why are older data models are being replaced by new data models
Question 1 Explain the 10 reasons to use MySQL Question 2 Write the SQL statements to demonstrate the following using SELECT command Expression Evaluation ORDER BY
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
What is conceptual model ? A conceptual model is a independent of both hardware and software.
a brief definition
Conflicting Operations in Schedule: The three simple ways of interleaved instruction implement of transactions T1 and T2. Please note that in the following tables the first col
Define- relational algebra. The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relati
I need a professional to prepare a database to collect and store basic information. The information can be basic info such as contact details etc. One requirement i have is f
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
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