aligned and unaligned database

[newBioinfo]

Hi Everyone,
I am very confused here, I am not able to get the difference between aligned and unaligned database.
Here is an example of an aligned database:
>AF515816.1
.............................................................................................................................................................
.............................................................................................................................................................
.............................................................................................................................................................
.............................................................................................................................................................
.............................................................................................................................................................
.............................................................................................................................................................
.....................................................................................................A------T-G--A-C-G-C--T-G-G-C--G-G--C-A-T-G----------C---
-T-T--TA-C--AC-A----T-G--C----A-A-G--T-C--GA-A-CG-----------G-CAG--C-G--G------------------------------------G-G-G-C-----------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------
---------------------------------------------TTC-G-----------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------------------------------G-
-C--C-T-------------------------G-C-C----G--GC--G-------AG-T-G-G-C-GA-A--C-------------G-G-------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------G--T--G-A--G-
T-A---AT-G-C-A--T-C-GG---A-A--C-GT-G--C-C-CAG--TC-A----------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------
------T-G--G----G--G--G---AT-AA-C--TA-------------------------C-G-C------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------G--A-A-A-----------------------GCG-T-A
-G-CT--A-A-TA---C-C-G--C-A--T-A----------C-------------------------------------------------------------------------------------------------------------------

And the unaligned database looks like this:
>S000406428 uncultured bacterium; BND5 Lineage=Root;rootrank;Bacteria;domain;"Actinobacteria";phylum;Actinobacteria;class;Acidimicrobidae;subclass;Acidimicr
obiales;order;"Acidimicrobineae";suborder;Acidimicrobiaceae;family;Acidimicrobium;genus
tgccggggactcgtaggggactgccggagttaattcggaggaaggtggggacgacgtcaagtcatcatgccccttacgtc
cagggctgcacgcatgctacaatggccggtncaaagggtcgccaacccgcgagggggagccaatcccaaaaaaccggtct
cagttcggatcggcagtctgcaactcgactgcttgaagtcggaktcgctagtaatcccggatcancacgccggggtgaat
acgttcccgggccttgtacacaccgcccgt


Please can anyone explain me the difference.
Thanks for the help!!!!!!!!!

[GenoMax]

http://www.bioperl.org/wiki/FASTA_multiple_alignment_format

http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/multalignviewer/afasta.html

http://square.bioinfo.cnio.es/SQUAREfasta.html

[me_myself_andI]

Hard to say without giving us more info. The unaligned version looks like it was downloaded from RDP. The other one doesn't, so I presume it was produced with some program. Then the dots could mean anything from gaps to no consensus change and masked region etc etc.