Architecture of database heavy application

A program I'm currently designing is extremely database heavy, almost anything the user does will alter the database, or read from it. Now I have one interface which defines all these operations, and one database class which implements this.
The result is that that class is huge, it contains logic for creating users, editing them, creating events, showing events to the user, editing, adding friends, adding items to a product, ....
On the one hand I can argue this does not violate SRP, because the whole use is database communication. On the other hand, this is a lot of code for one class.
Are there any design patterns that solve this, or is this acceptable?

Moderators,
Please look closely, I have already pointed it and you would find that ALL answers which Takken go is from Engsoochean. This is highly not possible its clear favoritism. There are couple of users who are marking ONLY HIS ANSWER and ONLY VOTING HIS POST helpful.
I am not saying answer is incorrect and question is not relevant to Database design.
I have ONLY UNMARKED the answer as I want other moderators to have a look and then they can mark the answer.
Please mark this reply as answer if it solved your issue or vote as helpful if it helped so that other forum members can benefit from it
My Technet Wiki Article
MVP

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Architecture change in existing application

Aim: Architecture change in existing application
Domain: Health Care
Background: There are 2 application ( Front end: one in oracle forms - deals with accounts module and another in some legacy application - deals with patient, clinical and diagnose module) using and sharing the same Oracle 9i database.
Patient related modules are moved into another database ( java as a front end, oracle 10g as backend ) which is normalized - eliminating duplicate tables and column, also its tables and columns names are not matching with existing (patient)system.
Now the requirement is making the existing application related only to Accounts module ( having complicated business logic written in packages ) to work as it is without changing the code, design drastically.
Questions:
1. Now how best this task can be completed without affecting existing Accounts system drastically ( with minimal changes )?
2. what are the possible best approach to achieve this ?
3. what are the best way for communicating the 2 DB in this scenario ( may be creating synonym, views etc ) ?
4. What are challenges that needs to be addressed ?
Any recommendation, suggestion and solution will be very much appreciated.
Thanks and Regards,
Lokesh

Views are one possible approach which make it possible to change the "real" datamodel without changing the appliacation itself. I can't tell you if its the "best" approach for your problem.
Since most of the Patient related tables ( more than 200 tables ) are modified and if views are created for all this tables, What will be the performance.Performance is not influenced by just the fact that you use views instead of tables. It depends on the structure and complexity of the views you use. This question can not be answered in general.
If 2 databases resides in 2 different server then, what is the best approach for communicating databases
( can you please put a thought on MQ, staging database... ) ?Again, it depends. How much data has to be read from one db in the other one? Are there data changes happending in one db which have to be applied in the other db?
Based on above two, Is it still view are the best option?I don't know enough of your requirements to answer that question.

TRANSFER OF DATA FROM DATABASE TO APPLICATION SERVER

I have to upload /transfer data from database to application server .
I am not able to get it.
If anyone have any solution to it,
post it to me.
thanks

*& Report <name>
REPORT name.
DATA:
BEGIN OF FS_SPFLI,
CARRID TYPE SPFLI-CARRID,
CONNID TYPE SPFLI-CONNID,
COUNTRYFR TYPE SPFLI-COUNTRYFR,
CITYFROM TYPE SPFLI-CITYFROM,
AIRPFROM TYPE SPFLI-AIRPFROM,
COUNTRYTO TYPE SPFLI-COUNTRYTO,
CITYTO TYPE SPFLI-CITYTO,
AIRPTO TYPE SPFLI-AIRPTO,
FLTIME TYPE SPFLI-FLTIME,
DEPTIME TYPE SPFLI-DEPTIME,
ARRTIME TYPE SPFLI-ARRTIME,
DISTANCE TYPE SPFLI-DISTANCE,
DISTID TYPE SPFLI-DISTID,
FLTYPE TYPE SPFLI-FLTYPE,
PERIOD TYPE SPFLI-PERIOD,
END OF FS_SPFLI.
DATA:
T_SPFLI LIKE
STANDARD TABLE
OF FS_SPFLI.
DATA:
BEGIN OF FS_TABLE,
CHAR(100) TYPE C,
END OF FS_TABLE.
DATA:
T_TABLE LIKE
STANDARD TABLE
OF FS_TABLE.
DATA:
BEGIN OF FS_TABLE1,
CHAR(100) TYPE C,
END OF FS_TABLE1.
DATA:
T_TABLE1 LIKE
STANDARD TABLE
OF FS_TABLE1.
SELECT CARRID
CONNID
COUNTRYFR
CITYFROM
AIRPFROM
COUNTRYTO
CITYTO
AIRPTO
FLTIME
DEPTIME
ARRTIME
DISTANCE
DISTID
FLTYPE
PERIOD
FROM SPFLI
INTO TABLE T_SPFLI.
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
BIN_FILESIZE =
FILENAME = 'd:\files\p_spfli04'
FILETYPE = 'ASC'
APPEND = ' '
WRITE_FIELD_SEPARATOR = ' '
HEADER = '00'
TRUNC_TRAILING_BLANKS = ' '
WRITE_LF = 'X'
COL_SELECT = ' '
COL_SELECT_MASK = ' '
DAT_MODE = ' '
CONFIRM_OVERWRITE = ' '
NO_AUTH_CHECK = ' '
CODEPAGE = ' '
IGNORE_CERR = ABAP_TRUE
REPLACEMENT = '#'
WRITE_BOM = ' '
TRUNC_TRAILING_BLANKS_EOL = 'X'
WK1_N_FORMAT = ' '
WK1_N_SIZE = ' '
WK1_T_FORMAT = ' '
WK1_T_SIZE = ' '
IMPORTING
FILELENGTH =
TABLES
DATA_TAB = T_SPFLI
FIELDNAMES =
EXCEPTIONS
FILE_WRITE_ERROR = 1
NO_BATCH = 2
GUI_REFUSE_FILETRANSFER = 3
INVALID_TYPE = 4
NO_AUTHORITY = 5
UNKNOWN_ERROR = 6
HEADER_NOT_ALLOWED = 7
SEPARATOR_NOT_ALLOWED = 8
FILESIZE_NOT_ALLOWED = 9
HEADER_TOO_LONG = 10
DP_ERROR_CREATE = 11
DP_ERROR_SEND = 12
DP_ERROR_WRITE = 13
UNKNOWN_DP_ERROR = 14
ACCESS_DENIED = 15
DP_OUT_OF_MEMORY = 16
DISK_FULL = 17
DP_TIMEOUT = 18
FILE_NOT_FOUND = 19
DATAPROVIDER_EXCEPTION = 20
CONTROL_FLUSH_ERROR = 21
OTHERS = 22
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
CALL FUNCTION 'GUI_UPLOAD'
EXPORTING
FILENAME = 'd:\files\p_spfli04'
FILETYPE = 'ASC'
HAS_FIELD_SEPARATOR = ' '
HEADER_LENGTH = 0
READ_BY_LINE = 'X'
DAT_MODE = ' '
CODEPAGE = ' '
IGNORE_CERR = ABAP_TRUE
REPLACEMENT = '#'
CHECK_BOM = ' '
VIRUS_SCAN_PROFILE =
IMPORTING
FILELENGTH =
HEADER =
TABLES
DATA_TAB = T_TABLE
EXCEPTIONS
FILE_OPEN_ERROR = 1
FILE_READ_ERROR = 2
NO_BATCH = 3
GUI_REFUSE_FILETRANSFER = 4
INVALID_TYPE = 5
NO_AUTHORITY = 6
UNKNOWN_ERROR = 7
BAD_DATA_FORMAT = 8
HEADER_NOT_ALLOWED = 9
SEPARATOR_NOT_ALLOWED = 10
HEADER_TOO_LONG = 11
UNKNOWN_DP_ERROR = 12
ACCESS_DENIED = 13
DP_OUT_OF_MEMORY = 14
DISK_FULL = 15
DP_TIMEOUT = 16
OTHERS = 17
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
*LOOP AT T_TABLE INTO FS_TABLE.
WRITE:
/ FS_TABLE-CHAR.
*ENDLOOP.
OPEN DATASET 'p_spfli04' FOR INPUT IN TEXT MODE ENCODING DEFAULT.
IF SY-SUBRC EQ 0.
MESSAGE 'File Already Exists' TYPE 'I'.
STOP.
ELSE.
CLOSE DATASET 'p_spfli04'.
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OPEN DATASET 'P_SPFLI02' FOR OUTPUT IN TEXT MODE ENCODING DEFAULT.
LOOP AT T_TABLE INTO FS_TABLE.
TRANSFER FS_TABLE TO 'p_spfli04'.
ENDLOOP.
CLOSE DATASET 'p_spfli04'.
*ENDIF.
OPEN DATASET 'p_spfli04' FOR INPUT IN TEXT MODE ENCODING DEFAULT.
LOOP AT T_TABLE INTO FS_TABLE.
READ DATASET 'p_spfli04' INTO FS_TABLE.
APPEND FS_TABLE-CHAR TO T_TABLE1.
ENDLOOP.
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Pavan P.

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bhatia wrote:
Hi,
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Message was edited by:
user633617

set pages 100
set lines 3000
col machine format a25
col username format a15
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inner join HyperV_Inventory.HostGuestDetails on HyperV_Inventory.HostGuestDetails.DeviceNumber = AllDevices_Assessment.HardwareInventoryCore.DeviceNumber
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Hi iam subbu
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