6. Data

7. Data Project

8. Data Project Documentation

9. Data Project Documentation Theory

10. Data User Documentation Theory Project

11. Data User Documentation Theory Project Data storage and preservation (official archives)

12. Data User Documentation Theory Project Data processing and analysis (personal archives)

13. Data User Documentation Theory Project Supporting documentation

14. Data User Documentation Theory Project User guides

28. .. .. .. .. .. .. .. .. .. .. .. .. .. 8 .. .. 2 73 3 1 7 .. .. 10 74 2 1 6 .. .. 6 72 1 2 5 .. .. 2 73 1 2 4 .. .. 4 73 2 2 3 .. .. 3 75 3 1 2 .. .. 6 70 3 1 1 .. .. V4 V3 V2 V1 ID

30. Different respondents, same questions T1 T2 .. .. .. .. .. .. 74 1 2 3 .. 71 3 1 2 .. 72 3 1 1 .. V3 V2 V1 ID .. .. .. .. .. .. 83 3 1 3 .. 80 1 2 2 .. 79 2 2 1 .. V3 V2 V1 ID

32. Hierarchical structure #1 (people in households) .. .. .. .. .. .. .. .. .. .. 1 2 2 1 1 4 .. .. 2 1 1 1 1 4 .. .. 2 1 3 2 2 3 .. .. 1 1 2 2 2 3 .. .. 2 2 1 2 2 3 .. .. 2 2 1 1 1 2 .. .. 2 1 2 1 4 1 .. .. 1 2 1 1 4 1 .. .. P2 P1 PNO H2 H1 HHID

33. Hierarchical structure #2 (episodes of employment) .. .. .. .. .. .. .. -8 2005 2 2 4 .. 2005 2004 1 1 4 .. -8 2001 1 3 3 .. 2001 1998 1 2 3 .. 1998 1995 2 1 3 .. -8 2002 2 1 2 .. -8 2005 1 2 1 .. 2005 2001 2 1 1 .. P3 P2 P1 EMPNO PID

35. Same respondents over time T1 T3 T2 T4

37. Same respondents over time T1 T3 T2 T4

39. Looking backwards T1 T1 - X

42. Household ID links each file HH and Ind HH members Absent Migrants

44. Each data file relates to each other (person ID) Education Marriage Leisure Employment Job Housing Cohabitation Core Children