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What does authentication refer?
Authentication refers to the task of verifying the uniqueness of a person.
diagrams and meaning
Define the terms i) Entity set ii) Relationship set Entity set: The set of all entities of the similar type is termed as an entity set. Relationship set: The set of all rela
need requirement analysis for database management of stock market
Create a view emp_dep containing e_name and number of dependents from the tables employee and dependent of (i) CREATE VIEW emp_dept AS SELECT ename, COUNT(*) FROM employee, dep
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
List the string operations supported by SQL? 1) Pattern matching Operation 2) Concatenation 3) Extracting character strings 4) Converting among uppercase and lower cas
What are referential integrity constraints? A value that appears in single relation for a given set of attributes also appears for a particular set of attributes in another rel
1. Define each of the following IN YOUR OWN WORDS: (a) File: (b) Record: (c) Field: (d) Primary Key: (e) Secondary Key: 2. A travel agency wants t
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
Hierarchical
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