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Which of the following constitutes a basic set of operations for manipulating relational data?

A. Predicate calculus

B. Relational calculus

C. Relational algebra

D. SQL

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The transactions like adding an employee, enrolling a student in a course are examples of _______
  2. A ______ module is typically designed so that it will run on a user workstation or personal computer.
  3. DFD stands for
  4. Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
  5. The clause in SQL that specifies that the query result should be sorted in ascending or descending order…
  6. The _____ category includes storage media that can be operated on directly by the computers central…
  7. In b-tree the number of keys in each node is than the number of its children.
  8. A _____ is used to define overall design of the database
  9. When an E-R diagram is mapped to tables, the representation is redundant for
  10. Assume transaction A holds a shared lock R. If transaction B also requests for a shared lock on R.
  11. The cost of reading and writing temporary files while evaluating a query can be reduced by
  12. Which two files are used during operation of the DBMS?
  13. Which normal form is considered adequate for normal relational database design?
  14. It is an abstraction through which relationships are treated as higher level entities
  15. HSAM stands for ……….
  16. The language that requires a user to specify the data to be retrieved without specifying exactly how…
  17. The one guideline to be followed while designing the database is
  18. Relations produced from an E-R model will always be
  19. The common column is eliminated in
  20. DBMS helps achieve
  21. The size of a data item is called its _______, which can be a field of some record or may be a larger…
  22. The ______ key of a relation is the attribute (column) or collection of attributes, which uniquely identify…
  23. Tree structures are used to store data in
  24. ______ keyword is used to find the number of values in a column.
  25. As per equivalence rules for query transformation, selection operation distributes over
  26. Data independence means
  27. operator is used to compare a value to a list of literals values that have been specified.
  28. _____ First proposed the process of normalization.
  29. Which of the following ensures the atomicity of the transaction?
  30. A table can have only one