dbGetExperimentInfo {maDB}R Documentation

List information about an experiment from a database.

Description

dbGetExperimentInfo This function lists all experiments that are stored into a database with the publishToDB function, or lists all properties from a particular experiment.

Usage

dbGetExperimentInfo(Con,exp.title)

Arguments

Con A connection object (create it with the dbConnect.PgSQL.conn function from the package RdbiPgSQL)
exp.title The experiment title (name) from the experiment which properties should be listet. If nothing is submitted a list with all experiments that are stored in the database is displayed.

Details

This function collects information about the specified experiment over all tables and lists this information. A table is returned, that contains all primary keys or foreign keys with wich all data can be retrieved for the particular experiment from the various tables. This tables are:

experiments
Primary information about the experiment
arrays
the arrays od GeneChips which where used in the experiment
signal_channels
in two color micro arrays two signal channels exist and therefore two entries in the signal_channels table reference to one entry in the arrays table. For Affymetrix GeneChips the reference is one to one.
exp_values
this table contains all the expression values from the corresponding signal channels of the experiment. The reference to the signal_channels table is established by the signal_channels_fk column in the exp_values table.
samples
Each entry in this table references to one or more entries in the signal_channels table. This table contains information about the samples that were hybridized onto the arrays.

Author(s)

Johannes Rainer

References

See Also

dbGetAnnotation publishToDB dbConnect EexprSet-class


[Package maDB version 1.2.0 Index]