Refactoring

[Tigrov]

according to changes in main db package

• Refactofing db#940

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌
Fixed issues

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.70%. Comparing base (b847ff3) to head (e2ad79b).
Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #384      +/-   ##
============================================
- Coverage     98.72%   98.70%   -0.02%     
+ Complexity      175      173       -2     
============================================
  Files            16       16              
  Lines           547      539       -8     
============================================
- Hits            540      532       -8     
  Misses            7        7              

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