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Have database built but having problems with some questions that go with the database
Describe Query evaluation engine? Query Evaluation engine: Vehicle executes low-level instructions obtained through the DML compiler. The Storage Manager Components gives in
write a short note on participation role? Participation role: roles are indicating in E-R diagram by labelling the lines that connect diamonds to rectangles.
Limitations of File Based System The file-based system has some limitations. The limitations are listed as follows: Isolation and separation of data: When the data is
What is the difference among a database schema and a database state? The collection of information stored in database at particular moment in time is known as database state a
various techniques of hashing?
Information about films holds information about movies, stars and studios. Movies have a title, year of production, length and the film type. Stars have a name and address. Studi
While sorting field groups we cannot use more than one key field False.
Why do you go for sorting your query results? SQL SELECT command to fetch data from MySQL table. Whenever you select rows, the MySQL server is free to return them in any order
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
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