Hi.

  I undertstood I can use this structure with cassandra :

KeySpace_3nodeslevels = {
    Key_Family_alfa : {
        Key_Super_Column_A : { Key_Column_1: "Value_alfa_A_1",
                               Key_Column_2: "Value_alfa_A_2"},
        Key_Super_Column_B : { Key_Column_1: "Value_alfa_B_1",
                               Key_Column_2: "Value_alfa_B_2"} },
    Key_Family_beta : {
        Key_Super_Column_A : { Key_Column_1: "Value_beta_A_1",
                               Key_Column_2: "Value_beta_A_2"},
        Key_Super_Column_B : { Key_Column_1: "Value_beta_B_1",
                               Key_Column_2: "Value_beta_B_2"} }
             }

I have 3 nodes levels of hierarchy for the keys : Key_Family, Key_Super_Column 
and  Key_Column.
I have around 100 Billions of keys for the Family level.

  Can I have 4 nodes levels of hierarchy like this ?

KeySpace_4nodeslevels = {
    Key_level1_alfa : {
        Key_level2_A : { Key_level3_1: { Key_level4_first  : 
"Value_alfa_A_1_first",
                                         Key_level4_Second : 
"Value_alfa_A_1_second"},
                         Key_level3_2: { Key_level4_first  : 
"Value_alfa_A_2_first",
                                         Key_level4_Second : 
"Value_alfa_A_2_second"} },
        Key_level2_B : { Key_level3_1: { Key_level4_first  : 
"Value_alfa_B_1_first",
                                         Key_level4_Second : 
"Value_alfa_B_1_second"},
                         Key_level3_2: { Key_level4_first  : 
"Value_alfa_B_2_first",
                                         Key_level4_Second : 
"Value_alfa_B_2_second"} } },
    Key_level1_beta : {
        Key_level2_A : { Key_level3_1: { Key_level4_first  : 
"Value_beta_A_1_first",
                                         Key_level4_Second : 
"Value_beta_A_1_second"},
                         Key_level3_2: { Key_level4_first  : 
"Value_beta_A_2_first",
                                         Key_level4_Second : 
"Value_beta_A_2_second"} },
        Key_level2_B : { Key_level3_1: { Key_level4_first  : 
"Value_beta_B_1_first",
                                         Key_level4_Second : 
"Value_beta_B_1_second"},
                         Key_level3_2: { Key_level4_first  : 
"Value_beta_B_2_first",
                                         Key_level4_Second : 
"Value_beta_B_2_second"} } }
        }

Thanks.

*********************************
This message and any attachments (the "message") are confidential and intended 
solely for the addressees. 
Any unauthorised use or dissemination is prohibited.
Messages are susceptible to alteration. 
France Telecom Group shall not be liable for the message if altered, changed or 
falsified.
If you are not the intended addressee of this message, please cancel it 
immediately and inform the sender.
********************************

Reply via email to