TurboIMAGE/XL Database Management System Reference Manual MPE/iX V6.5 (30391-90011)

198 Chapter5
TurboIMAGE/XL Library Procedures
DBINFO
capacities in DBINFO 208.
DBINFO mode 208 returns information about internals which will be meaningful to only a
few customers.
Mode 209: B-Tree Attachment
Mode 209 informs whether or not a B-Tree exists for a master.
Qualifier is a master data set name or number.
Buffer must be at least a 64-byte record and returns the following (each element
is a 32-bit Word):
Mode 301: Paths
Mode 301 identifies the paths defined for a specified data set.
Qualifier identifies the data set name or number for which the information is
requested.
Buffer returns the following (each element is a halfword or two bytes):
Elements 2 to 4 are repeated for each path.
If qualifier specifies a master data set, the set number identifies the detail
data set.
Element Contents
1 0 if no B-Tree index exists
1 if B-Tree index exists
2 0 if attached B-Tree not damaged or index does not exist
1 if the attached B-Tree index is damaged
3...32 For internal use
Element Contents
1 Path count x
2 Data set number of path 1
3 Search item number of path 1
4 Sort item number of path 1
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3n–1 Data set number of path n
3n Search item number of path n
3n+1 Sort item number of path n