PL/SQL: Two dimensional associative array sytax

I'm not following.

You want an array of varchar2,date?

Create a record or object with those two columns then use an array of that record.

>>once it is set up can I use

No but you should be able to cast it as a table and select from it.

Also it would not be:
myTable where mychar IN(Array)

But you might be able to get away with:
myTable where (mychar, mydate) IN( select arrayChar, arrayDate from table(Array))

Can you provide some sample data and expected results?

you wouldn't use associative arrays for an IN clause, but rather a nested table type.

I've heard that an associative array of an array is used for a multidimensional array. I want to understand that process.
I dont understand how I could populate and use it. All the docs I've read fall short.

For example, I wish to store a varchar2 and a date. If I create an array :
DECLARE
TYPE myArray IS TABLE OF varchar2
 INDEX BY VARCHAR2(10);
myvar varchar2;
<create second array(MyArray2)  here?>
BEGIN
  Insert myfield, mydate into myArray2 from AnotherTable
...

Then I would like to do something like mentioned above with another table:
MyTable2 where (myCharField, myDateField) IN (select ?? from myArray2)



...

>>I wish to store a varchar2 and a date. If I create an array :

I'm still not understanding how you want to use both of these in a multi-dimensional array.

Can you post from sample data showing what you want this to look like?

Thanks once more!