In the Variable Explorer window, variables are organized based on data types. Variable dimensions and sizes are displayed to the right of variable names.
The total size of all the DolphinDB variables in memory is displayed within the square brackets to the right of "Variables" on the top of the variable explorer.
We can right click on a table and select "schema" to check the table schema.
To browse the contents of a variable, we can double click the variable in the Variable Explorer window to launch a data browser window.
Right click on an item and choose "undefine" to release this object from the system memory. If a category (Local Variables, Vectors, Table, Scalar/Pair, etc) is chosen for this operation, all the variables in this category will be released from the system memory.