Describing changes in the register by events and mutations Ivo Beuken

Introduction Contact information Email1: iben@cbs.nl (at work) Email2: yuui@home.nl

Events What are they? Why do we need them? On which units? Types of events Why do we need them? On which units? How can we deduce them? An example Datamodel

Events What are they? Events are happenings! Statistical events are events on statistical units

Events Why do we need them? Demography for business statistics Checks in the statistical process

Events: example “merger”

Types of events m\n 1 >1 - Birth Death Characteristic Change 1 >1 - Birth Death Characteristic Change Split-off Change of ownership Break-up Take-over Restructure Merger

How to deduce events? (1) There´s not only one method! Our method: Create new preliminary statistical units from changes in legal units Form a file of all units that are/were related to each other. Relations: LU-EG, LU-ENT, ENT-EG, LU-LU (control) Trace all pure births

How to deduce events? (2) Our method: … Trace all pure deaths Trace all characteristic changes Name the remaining event

# persons employed in LU_new Example of a file Date LU_ID ENT_ID_old ENT_ID_new # persons employed in LU_new Event 05-10-03 LU1 E1 Ea 10 ? LU2 5 LU3 Eb 4 LU4 - LU5 E2 12-10-03 LU6 E3 Ec LU7 Ed 22-10-03 LU8 3 LU9 2

# persons employed in LU_new Example of a file Date LU_ID ENT_ID_old ENT_ID_new # persons employed in LU_new Event 05-10-03 LU1 E1 Ea 10 LU2 5 LU3 Eb 4 LU4 - LU5 E2 12-10-03 LU6 E3 Ec LU7 Ed Birth 22-10-03 LU8 3 LU9 2

# persons employed in LU_new Example of a file Date LU_ID ENT_ID_old ENT_ID_new # persons employed in LU_new Event 05-10-03 LU1 E1 Ea 10 LU2 5 LU3 Eb 4 LU4 - LU5 E2 Death 12-10-03 LU6 E3 Ec LU7 Ed Birth 22-10-03 LU8 3 LU9 2

# persons employed in LU_new Example of a file Date LU_ID ENT_ID_old ENT_ID_new # persons employed in LU_new Event 05-10-03 LU1 E1 Ea 10 LU2 5 LU3 Eb 4 LU4 - LU5 E2 Death 12-10-03 LU6 E3 Ec Cont. LU7 Ed Birth 22-10-03 LU8 3 LU9 2

Types of events m\n 1 >1 - Birth Death Characteristic Change 1 >1 - Birth Death Characteristic Change Split-off Change of ownership Break-up Take-over Restructure Merger

# persons employed in LU_new Example of a file Date LU_ID ENT_ID_old ENT_ID_new # persons employed in LU_new Event 05-10-03 LU1 E1 Ea 10 ? LU2 5 LU3 Eb 4 LU4 - 22-10-03 LU8 3 LU9 2 LU5 E2 Death 12-10-03 LU6 E3 Ec Cont. LU7 Ed Birth

# persons employed in LU_new Example of a file Date LU_ID ENT_ID_old ENT_ID_new # persons employed in LU_new Event 05-10-03 LU1 E1 Ea 10 LU2 5 LU3 Eb 4 Split-off LU4 - 22-10-03 LU8 3 LU9 2 LU5 E2 Death 12-10-03 LU6 E3 Ec Cont. LU7 Ed Birth }

Types of events m\n 1 >1 - Birth Death Characteristic Change 1 >1 - Birth Death Characteristic Change Split-off Change of ownership Break-up Take-over Restructure Merger

Datamodel

Thank you for your attention! Contact information Email1: iben@cbs.nl (at work) Email2: yuui@home.nl