Migration

Migration
Internal Migration
It incldes any movement within the political boundaries of a nation which results in a change of usual place of residence. It may consist of the crossing of a village or town boundary as a minimum condition for qualifying the movement as internal migration Thus. the concept of interTJa1111igrationinvolves implicitly an imposition of boundary lines which must be crossed before a movement is counted as internal migration.
Migrant
Migrant is usually defined as a person who has moved from one politically defined area to another similar area. In Indian context, these areas are generally a village in rural and a town in urban. Thus a person who moves out from one village or town to another village or town is termed as a migrant provided -his/her movement is not of purely temporary nature on account of casual leave, visits, tours, etc.
Non- Migrants (Immobiles)
People, who are seen living their entire life-time and die in the same village/town in which they were born, are defined as Immobiles or non-migrants.
Birth Place Migrant
If at the time of Census enumeration, there is a change in the usual place of residence of an individual with r:eference to his/her birth place, he/she is defined as a migrant in accordance with 'birth place' concept.
Last Residence Migrant
If at the time of Census enumeration, a change in the usual place of residence of an
individual is noted with reference to his/her previous usual residence, he/she is termed as a migrant in accordance with ‘last residence' concept.
In-migrant
A person, who crosses the boundaries of a village/town for the purpose of residing at the place of enumeration, is an in-migrant.
Out-migrant
If a person moves out from the place of enumeration (village/town) to another
politically defined area (village/town) for usual residence, he or she is termed as an out-migrant.
Intra-district Migrant
When a person moves out from his place of usual residence or birth to another politically defined area (village/town), which is within the district of enumeration, he/she termed as an intra-district migrant.
Inter-district Migrant
A person who is in the course of migration crosses the boundary of the district of enumeration but remains within the State of enumeration, is termed as an inter- district migrant.
Intra-state Migrant
When a person crosses the boundary of his/her village/town for usual residence elsewhere within the State of enumeration, the person concerned is treated as an intra-State migrant. Thus intra-district and inter-district migrants together constitute the intra-State migrants.
Inter-State migrant
If the place of enumeration of an individual differs from the place of birth or last residence and these lie in two different States, the person is treated accordingly as an inter-State migrant with regard to birth place or last residence concept.
Life-time In-Migration
It denotes the total number of persons enumerated in a given area at a particular Census who were born outside the area of enumeration but within the national boundaries.
Life-time Out-Migration
It gives the total number of persons born in a given area but now enumerated outside the area within the national boundaries at the time of particular Census.
Life-time Net-Migration
The difference between life-time in-migration and life-time out-migration is termed as life-time net-migration.
Migration rate
It is taken as the ratio of total migrants counted in the Census to its total population
multiplied by 1000. While discussing the migration result, the term population mobility is taken as a synonym to migration rate.
Abbreviations Used
The following abbreviations of civic status of cities or towns are used while presenting the data in the Table on Final Population Totals:
Definition of Slum
Slums have come to form an integral part of the phenomena of urbanization in India. Comprehensive information on the slums being essential for formulation of effective and coordinated policy for their improvement. Formation and identification of slum enumeration blocks prior to the conduct of 200 I Census has made it possible to compile and repare special tables for slums. It is for the first time in the history of census in the country that the slum demography is being presented on the basis of the actual count. The systematic delineation of slums for collection of primary data on their population characteristics during population enumeration itself may perhaps be the first of its type in the world.
For the purpose of Census of India, 2001, the slum areas broadly constitute of :-
(i) All specified areas in a town or city notified as 'Slum' by State/Local Government and UT Administration under any Act including a 'Slum Act'.
(ii) All areas recognized as 'Slum' by State/Local Government and UT Administration, Housing and Slum Boards, which may have not been formally notified as slum under. any act;
(iii) A compact area of at least 300 population or about 60-70 households of poorly built congested tenements, in unhygienic environment usually with inadequate infrastructure and lacking in proper sanitary and drinking
Age-sex structure
The composition of a population as determined by the number or proportion of males and females in each age category. The age-sex structure of a population is the cumulative result of past trends in fertility, mortality, and migration, Information on age-sex composition is essential for the description and analysis of many other types of demographic data.
Baby boom
A dramatic increase in fertility rates and in the absolute number of births. In the United States this occured during the period following World War II (1946- 1964).
Birth rate (or crude birth rate)
The number of live births per 1,000 population in a given year. Not to be confused with the growth rate.
Death rate (or crude death rate)
The number of deaths per 1,000 population in a given year.
Growth rate
The number of persons added to (or subtracted from) a population in a year due to natural increase and net migration; expressed as a percentage of the population at the beginning of the time period.
Less developed countries
Less developed countries include all countries in Africa, Asia (excluding Japan), and Latin America and the Caribbean, and the regions of Melanesia, Micronesia, and Polynesia.
Lire expectancy .
The average number of additional years a person of a given age could expect to live if current mortality trends were to continue for the rest of that person's life. Most commonly cited as life expectancy at birth.
More developed countries
More developed countries include all countries in Europe, North America, Australia, New Zealand, and Japan.
Mortality
Deaths as a component of population change.
Net migration
The net effect of immigration and emigration on an area's population in a given time period, expressed as an increase or decrease.
Population pyramid
A bar chart, arranged vertically, that shows the distribution of a population by age and sex. By convention, the younger ages are at the bottom, with males on the left and females on the right.
Rate of natural increase
The rate at which a population is increasing (or decreasing) in a given year due to a
surplus (or deficit) of births over deaths, expressed as a percentage of the base population.
Zero population growth
A population in equilibrium, with a growth rate of zero, achieved when births plus
immigration equal deaths plus emigration. Zero growth is not to be confused with
replacement level fertility