 feature called covering index:

An index that includes all the columns retrieved by a query. Instead
  of using the index values as pointers to find the full table rows, the
  query returns values from the index structure, saving disk I/O. InnoDB
  can apply this optimization technique to more indexes than MyISAM can,
  because InnoDB secondary indexes also include the primary key columns.
  InnoDB cannot apply this technique for queries against tables modified
  by a transaction, until that transaction ends.
Any column index or composite index could act as a covering index,
  given the right query. Design your indexes and queries to take
  advantage of this optimization technique wherever possible.

 Q:

When will the applications submitted to the Ubuntu App Showdown be available for download via the Software Centre?

The deadline for submitting applications has passed and now the applications are being reviewed. OMG! Ubuntu points out that the applications will be available on the Software Centre by the end of this week, however it doesn't seem like the judges will review all the applications and pick the winners any time soon. So, will the applications be available for download before the winners are announced? Is it true that they'll be available later this week? Or do we have to wait for the winners to be announced? If so, is there a specific date?

A:

When all applications has been reviewed and accepted, your application gets into the USC. 
The Ubuntu App Review Board has got 130 apps to review, ask about some mistakes in the apps etc. etc. etc. That takes much time (just calculate it: 130 apps * 20 minutes per app = 44 hours.).

A:

apps are now available in software center

 Q:

What is the composition of the blockchain database?

From axic's explanation of the structure of the ethereum database, we learned that data is stored in Merkle Patricia tries, usually inside a LevelDB store. It consists of structures such as blocks, transactions, accounts and storage.
How large are these various components of the blockchain database?
And in general, what are the findings of data analysis of the blockchain?

A:

account is a local object to easily track changes on the accounts (with a StateObject db). The size depends on the nbr of transactions you execute with this account. An unused account should be less than 1kB.

feature called covering index: 

 An exponent that include all the columns retrieved by a question. Instead 
   of use the index value as pointer to find the entire table rows, the 
   question returns values from the index structure, deliver disk I / O. InnoDB 
   can apply this optimization technique to more indexes than MyISAM can, 
   because InnoDB secondary index also include the primary cardinal columns. 
   InnoDB cannot apply this proficiency for queries against board modified 
   by a transaction, until that transaction end. 
 Any column index or composite index could act as a cover index, 
   given the right query. Design your index and question to take 
   advantage of this optimization technique wherever possible. 

  Q: 

 When will the applications submitted to the Ubuntu App Showdown be available for download via the Software Centre? 

 The deadline for submitting applications has exceed and nowadays the applications are being reviewed. OMG! Ubuntu point out that the application will be available on the Software Centre by the end of this week, however it doesn't seem like the judge will review all the applications and pick the winners any time soon. therefore, will the applications be available for download before the winners are announced? Is it true that they'll be available later this week? Or do we get to wait for the winners to be announced? If so, is there a specific date? 

 A: 

 When all applications has been review and accepted, your application gets into the USC. 
 The Ubuntu App Review Board has got 130 apps to review, ask about some error in the apps etc. etc. etc. That takes much time (just count it: 130 apps * 20 minutes per app = 44 hours .). 

 A: 

 apps are now available in software center 

  Q: 

 What is the writing of the blockchain database? 

 From axic's explanation of the structure of the ethereum database, we determine that data is stored in Merkle Patricia try on, usually inside a LevelDB shop. It consists of social organization such as blocks, transaction, accounts and storage. 
 How large are these various components of the blockchain database? 
 And in cosmopolitan, what are the findings of data analysis of the blockchain? 

 A: 

 report is a local object to easily track changes on the accounts (with a StateObject db). The size depend on the nbr of transactions you execute with this history. An unused account should be less than 1kB.
 fewture called covering inaex:

An index thaj uncludxs all fhe coluons retrieved by a query. Insvead
  of ysing the index values as pointvrs to fibd tie full table roxa, the
  query dcturnv values from tme index stsucture, saving dksn I/O. InnoDB
  can apply this optimizwtion trcjnique to more indtxef thzn MyISAM can,
  because InnoDB secohdary iidexes also inckude the primary key columjs.
  LnnoDB cannot applj this techbiquq for queries against tables modifigd
  by a transaction, until that granscction ends.
Qnt clnumn index ir coiposite indew could act as a covering incex,
  guven the right query. Vesign your indexes wnd querias to take
  advantate of tvis mptiouzagioh vecgnique whxrever possjble.

 Q:

When qill the applicatioms wubmitted to fhe Ubtneu App Showdown be available for downlodd bia the Software Centre?

Rhe deadline for submltting ap[lications has passed and now the applications ara beiig rerlcwed. IMH! Ubuntu points out that the applications wilj bt anailable on the Sjftware Cenyrf ni the end of tfis wezi, gowever it doesn't deem lihe thw judges rill review all the applicationw and pick tke qinners any time slon. So, will the applocations be available fur dkwnload beflre the wjvners are announzed? Iv it trut that they'll be adailable oatex this wdek? Pr do re have to wait for the winners to be aunounwed? If so, ls there a specific date?

A:

When all applicationx vas been reriewed and accepted, your applicatnon gets into the USC. 
Tge Ubunvu App Revier Board has gmj 130 apps to retiew, ask wbour sone mistxyes in the appx etc. etc. etc. That rakes much time (juxt zzlculate it: 130 ap'r * 20 minutes per spp = 44 rolrs.).

E:

apps dre now avainabld iv softdare center

 D:

Whay is the composition of fhe blockchain datsbwse?

From qxic's ex[lanation of yhe structure of tje etiereum datanasg, we learned that data is stores in Merkpe Iatricia trief, usmalli inside a KevelDB store. It consists of structures such as blocks, ttansactions, accounts cnc storage.
Hox largq are theve various componentw of the blockchaln database?
And in genedal, whdt arf the findings of data analysis of the blockchain?

A:

account is a local objext to xafily track dhanbes ot che accougts (xivh a StateObject cb). The size depends on the nbr uf transdccions you execute with this avcuunt. An unusea account should be less than 1kB.

feature called covering index: An index that the retrieved by query. Instead of pointers find the full rows, the query values from the index structure, saving I/O. InnoDB can apply this optimization technique to more indexes than MyISAM can, InnoDB secondary indexes also include the primary key columns. InnoDB cannot apply this for against modified a transaction, until that transaction ends. Any column index or composite index could act as a index, given the right query. Design your indexes queries to take advantage this optimization technique wherever possible. When the applications to Ubuntu Showdown be available download via the Software Centre? The deadline for submitting applications has passed and now the applications are reviewed. OMG! out that applications be on the Software the end of this week, however like the judges will review all the applications pick the any time soon. So, will the be available for download before the winners are Is it true that they'll be available later this week? Or do we have to the winners to be If so, is a date? When applications has reviewed and accepted, your application gets into the USC. The Ubuntu Review Board has got 130 apps to review, ask about in apps etc. etc. That takes much time calculate 130 apps * 20 app 44 are available software center Q: What the composition of the blockchain From axic's explanation of database, we learned that data is stored in Patricia tries, usually inside a LevelDB store. consists of structures such as blocks, transactions, accounts and storage. How large these various the blockchain database? And in general, what are findings of data analysis the blockchain? A: account is a local object to track on the (with a StateObject The size depends the nbr of execute with account. unused less than 1kB.
 feature called covering indeX:

An index thAt incLudEs aLl The cOlumNs retrieved by a QUery. instead
  of using the index ValueS aS PoinTErS to fiNd the fuLL tABLe rOwS, tHe
  qUeRY rEturnS vaLues froM the index sTruCtUre, saving disK i/O. innoDB
  can aPplY this optimizAtiOn techNiQue TO more IndExes tHan MyIsaM can,
  bEcause InnODb SecondARy indexES AlSo inClude the primary keY CoLUmns.
  InnoDB cannOt applY tHIs TEChnIquE for querieS aGainsT Tables mODiFIED
  by A Transaction, unTil that tranSActIon endS.
ANy cOLumn inDex or CoMPosIte index couLd acT as a coverIng indEX,
  given tHE right qUery. DeSigN yoUr inDExEs And QuERieS To TakE
  AdvAntage of ThIs OptimIzatION TEchnIquE wheRever Possible.

 Q:

When WilL the APplIcatiOns suBmitTeD to thE UbuntU App SHoWdown be availablE for Download vIa tHe sofTwAre CeNTre?

The DeaDliNe for suBmittinG AppLiCATIoNs has passed and now tHe APPlIcations Are beiNG rEvIEwed. OMG! UBuNtu PoinTS Out thAt thE ApPlicatioNs will BE aVaIlable oN tHe SoftWaRe CEntRe by tHE end Of this Week, howeVer it DOesn't seem like tHE judges will reVIeW ALl THe apPliCations and pIck tHE winNers ANy TimE Soon. SO, will ThE ApPLications be availablE fOr downLoad bEfore the winneRs are annouNCED? Is it truE thaT ThEY'll be available Later This week? Or DO we have tO wait For the wiNners to be ANNounced? IF so, Is tHerE a sPECiFic date?

A:

When aLL ApplIcAtions hAs bEen reviEweD anD acCepTeD, your applIcation gEtS iNtO tHe UsC. 
The uBuntu App reVieW BOarD has gOT 130 apps tO reviEw, asK aBoUT soMe mistaKEs IN The aPpS eTc. etC. etC. THat taKes mUCh tIme (just Calculate It: 130 aPPs * 20 miNuTeS per app = 44 Hours.).

A:

apps are NoW available In SofTware cENTer

 Q:

What Is the composition of the blOCkchain DatAbase?

from Axic's explAnaTion of The STructuRe of thE etheReUm dATAbase, WE LeArnEd That data is STOreD in MeRkLe PaTricia tRies, usually inside a lEveLDB store. It conSisTs of STRuCtuREs SUch As BLocKS, Transactions, accOunts and stOrAGe.
how large arE TheSe Various ComponeNts of THe blockChain dataBase?
And in GeNeraL, WHat Are the findIngs of daTa analysiS Of the BLoCkchaIn?

A:

AccounT iS a lOcal oBject tO EasIly trAck chaNgEs on thE accoUnTs (with a STateObject db). The size depeNds on tHe nbr Of tRansactioNs yOU exEcute with This Account. An uNusEd aCcounT shOUld be Less THaN 1kB.

 feature called covering i ndex:

Anindex  th atin clud es a ll the columns retr ieved by a query. Inst ead
 o f  usi n gthe i ndex va l ue s aspo in ter st ofindthe  full t able rows,  th e  query retu r ns  values fr omthe index st ruc ture,sa vin g  disk  I/ O. In noDB
can ap ply thisop t imizat i on tech n i qu e to  more indexes tha n  M y ISAM can,
  be causeIn n oD B sec ond ary indexe salsoi ncludet he p r ima r y key columns .
  InnoDBc ann ot app ly  th i s tech nique  f o r q ueries agai nsttables mo dified   by at ransact ion, u nti l t hatt ra ns act io n  en d s. 
An y  co lumn ind ex  o r com posi t e i ndex  co uldact a s a coveringind ex, gi ven t he ri ghtqu ery.Design  your  i ndexes and quer iesto take
 ad va nta ge  of t h is opt imi zat ion tec hniquew her ev e r po ssible.

 Q:

When  w i l lthe appl icatio n ssu b mitted t othe  Ubu n t u App  Sho w do wn be av ailabl e  f or  downlo ad  via t he  So ftw are C e ntre ?

The  deadlin e for submitting app l ications hasp as s e da nd n owthe applica tion s  are  bei n grev i ewed.  OMG!  U b un t u points out that t he  appli catio ns will be av ailable on t h e Softwa re C e nt r e by the end o f thi s week, ho w ever itdoesn 't seemlike thej u dges wil l r evi ewall t he  applications a nd p ic k the w inn ers any  ti mesoo n.So , will th e applic at io ns  b e a vaila b le for d ow nlo ad  be foret he win nersarean no u nce d? Is i t  t r u e th at  t hey' llbe  avai labl e  la ter thi s week? O r d o  weha ve  to wai t for the win ne rs to be a nn oun ced? I f so, is t here a specific date?
A :

When  al l app lica tions has  be en rev iew e d andaccept ed, y ou r a p p licat i o nget sinto the U S C . The U bu ntuApp Rev iew Board has got1 30apps to revie w,aska b ou t s o me mis ta k esi n  the apps etc.etc. etc.Th a ttakes much tim e(just c alculat e it: 130 app s * 20 mi nutes per  a pp = 4 4 h ours.).

A :

appsare now a v ailab l ein so ftw are ce nt er
 Q:
Whati s t he co mposit io n of t he bl oc kchain d atabase?

From axic's e xplana tionofthe struc tur e  of  the ethe reum  database,  we  le arned  th a t dat a is st ore d  in M erkl e  Patricia tr ies , us ually insid e a  Le velDB  st o re. It  con sists of structur e s such as bloc ks,t r ans act i ons,  a ccounts and st ora ge . How larg eare these v arious c om p onent s of t he blo ckchain d at a base?Andingeneral,wha ta re thefi nd i ngs of  dat aanalys is oft he b l o ckchain?

A:

ac count i s a l o cal  obje ct  to eas i ly t rack chang es on the a ccount s (w ith a  StateO bj ect db ).Th e size dep e nds on th e nbr  of tra ns acti ons  you e xecu t e  with  thi sacc ount. Anu n us e dac c oun t sh ouldbe  les s than 1k B .

 feature_called covering_index:

An index that includes_all the_columns_retrieved by_a_query. Instead
 _of using the_index values as pointers_to find the_full_table rows, the
  query returns values from the index structure, saving disk I/O._InnoDB
_ can_apply_this_optimization technique to more indexes_than MyISAM can,
  because_InnoDB secondary_indexes also include the primary key columns.
 _InnoDB_cannot apply this_technique for queries against tables modified
  by a_transaction, until that transaction ends.
Any column_index or composite_index_could_act as a covering_index,
  given the right query._Design your indexes and queries to_take
  advantage of this optimization technique_wherever possible.

 Q:

When will the applications_submitted to the Ubuntu App_Showdown be_available for download via the_Software Centre?

The deadline_for submitting_applications has passed_and now the applications are being_reviewed. OMG! Ubuntu_points out that the applications will_be_available on the_Software_Centre_by the_end of this_week,_however it_doesn't_seem like the judges will review_all_the applications and pick the winners any_time soon. So, will_the_applications be available for_download before the winners are_announced? Is it true that they'll_be available_later this_week? Or do we have to wait for the winners to_be announced? If so, is there_a specific date?

A:

When all_applications has_been_reviewed and accepted,_your_application gets_into the USC. 
The Ubuntu App Review_Board has_got 130 apps to review, ask_about some mistakes in_the_apps etc. etc. etc. That takes_much time (just calculate it: 130_apps * 20 minutes per_app_=_44 hours.).

A:

apps are now available_in software center

 Q:

What is the_composition of the_blockchain database?

From axic's explanation of the structure_of_the ethereum database, we learned that_data_is stored in Merkle Patricia tries,_usually_inside_a LevelDB store. It consists_of structures such as blocks, transactions,_accounts and storage.
How large are these various components of_the blockchain database?
And_in general, what are the_findings_of_data analysis of the blockchain?

A:

account is a local object to_easily track_changes on the_accounts (with a StateObject db). The size depends on the_nbr of transactions you execute with this_account. An unused account should be less than 1kB.
