The informix db access relational database access utility you can use db access with informix online dynamic server or the informix se data base server the db access user manual describes how to invoke the db access utility to access modify and retrieve information from informix database servers the db access user manual is a combination . Ii db access user manual published by informix 5 50 altering a table 5 57 the alter table screen 5 57 exiting the alter table screen 5 59 adding a column with the alter table menu 5 59 modifying a column with the alter table menu 5 60 dropping a column with the alter table menu 5 62 using the screen option on the alter table menu 5 63 changing table options . Ibm informix dynamic server version 1150 previous page next page contents index ibm informix db access users guide contents introduction in this introduction about this publication types of users software dependencies assumptions about your locale documentation conventions typographical conventions feature product and platform markup example code conventions additional . Types of users this manual is written for the following users 8 ibm informix db access users guide command line conventions these icons can apply to an entire section or to one or more paragraphs within a section if an icon appears next to a section heading the information that applies to the indicated feature product or platform ends at the next heading at the same or higher level