xx
For All LOB Statements ............................................................................................................. 16-9
For the LOB Buffering Subsystem.......................................................................................... 16-10
For Host Variables.................................................................................................................... 16-11
LOB Statements............................................................................................................................... 16-12
APPEND .................................................................................................................................... 16-12
ASSIGN...................................................................................................................................... 16-13
CLOSE ........................................................................................................................................ 16-13
COPY.......................................................................................................................................... 16-14
CREATE TEMPORARY........................................................................................................... 16-15
DISABLE BUFFERING ............................................................................................................ 16-16
ENABLE BUFFERING............................................................................................................. 16-16
ERASE......................................................................................................................................... 16-17
FILE CLOSE ALL...................................................................................................................... 16-18
FILE SET..................................................................................................................................... 16-18
FLUSH BUFFER........................................................................................................................ 16-19
FREE TEMPORARY................................................................................................................. 16-20
LOAD FROM FILE................................................................................................................... 16-20
OPEN.......................................................................................................................................... 16-21
READ.......................................................................................................................................... 16-22
TRIM........................................................................................................................................... 16-24
WRITE ........................................................................................................................................ 16-25
DESCRIBE.................................................................................................................................. 16-26
LOBs and the Navigational Interface.......................................................................................... 16-29
Transient Objects....................................................................................................................... 16-29
Persistent Objects...................................................................................................................... 16-29
Navigational Interface Example............................................................................................. 16-30
LOB Program Examples................................................................................................................. 16-31
READ a BLOB, Write a File Example..................................................................................... 16-31
Read a File, WRITE a BLOB Example.................................................................................... 16-33
lobdemo1.pc .............................................................................................................................. 16-36
17 Objects
Introduction to Objects.................................................................................................................... 17-2
Object Types ................................................................................................................................ 17-2
REFs to Object Types.................................................................................................................. 17-2