Vulcanizing
Galvanizing
Magnetizing
Passing UV rays
C. Magnetizing
Recovery measures.
Security measures.
Concurrency measures.
uthorization measures.
Edgar. W
Edward Stephen
Edgar F. Codd
Edward Codd
First normal form.
Second normal form.
Third normal form.
Fourth normal form.
BCNF
3NF
PJNF
DKNF
authorization and integrity manager
buffer manager
transaction manager
file manager
Data Flow Document
Data File Diagram
Data Flow Diagram
Non of the above
Entity
Attribute
Relationship
Notation
Network model.
Relational model.
Hierarchical model.
File based system.
DML compiler
DML pre-processor
DDL interpreter
Query interpreter
Code
Codd
Boyce Codd
Boyce
Union.
Set difference.
Intersection.
All of the above.
Secondary key
Alternate key
Unique key
Primary key
Conceptual level data hiding.
External level data hiding.
Physical level data hiding.
None of these.
Data security
Derived columns
Hiding of complex queries
All of the above
Direct
Indirect
Existence
No
Oval; An oval with an underlined attribute
Circle; A circle with bolded attribute inside it
Diamond; A bolded attribute
Square; An attribute within the square
Instance
Program
Schema
Super Key
Operationally, if Y is deleted, so is X
existence is dependent on Y.
Operationally, if X is deleted, so is Y.
Operationally, if X is deleted, & remains the same.
weak entity sets
weak relationship sets
strong entity sets
strong relationship sets
Atomicity
Concurrency
Isolation
Durability
disjoint
partial
overlapping
single
Create table Employee(EMPNO int, EMPNAME char(10));
Create table Employee(EMPNO integer, EMPNAME String(10));
Create table Emplo(EMPNO number, EMPNAME string);
Create table Emp(EMPNO int, EMPNAME char(10));
Tuple
Cardinality
Degree
Domain
It is the data contained in database that is non redundant.
It is the data contained in database that is accurate and consistent.
It is the data contained in database that is secured.
It is the data contained in database that is shared.
m+n and 0
m+n and |m-n|
mn and 0
mn and m+n
Procedural DML.
Non-Procedural DML.
Procedural DDL.
Non-Procedural DDL.
Sub
Parent
Candidate
Super
Query languages and utilities
DML and query language
Data dictionary and transaction log
Data dictionary and query language
Commutative
Associative
idempotent
distributive
code
data definition language
application program
schema