What will happen to old data if data structure changes in hyperledger fabric chaincode
What will happen to old data if data structure changes in hyperledger fabric chaincode? will it affect when we read old data from couchdb and translate it into object of new structure? Lets say I've added a new field and removed old field in the structure. what will be the impact of this change to old data?
hyperledger-fabric
asked Nov 13 '18 at 5:04
jkstarjkstar
1692317
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What will happen to old data if data structure changes in hyperledger fabric chaincode? will it affect when we read old data from couchdb and translate it into object of new structure? Lets say I've added a new field and removed old field in the structure. what will be the impact of this change to old data?
hyperledger-fabric
asked Nov 13 '18 at 5:04
jkstarjkstar
1692317
add a comment |
What will happen to old data if data structure changes in hyperledger fabric chaincode? will it affect when we read old data from couchdb and translate it into object of new structure? Lets say I've added a new field and removed old field in the structure. what will be the impact of this change to old data?
hyperledger-fabric
asked Nov 13 '18 at 5:04
jkstarjkstar
1692317
What will happen to old data if data structure changes in hyperledger fabric chaincode? will it affect when we read old data from couchdb and translate it into object of new structure? Lets say I've added a new field and removed old field in the structure. what will be the impact of this change to old data?
hyperledger-fabric
hyperledger-fabric
asked Nov 13 '18 at 5:04
jkstarjkstar
1692317
asked Nov 13 '18 at 5:04
jkstarjkstar
1692317
asked Nov 13 '18 at 5:04
jkstarjkstar
1692317
asked Nov 13 '18 at 5:04
jkstarjkstar
1692317
asked Nov 13 '18 at 5:04
jkstarjkstar
1692317
1692317
add a comment |
add a comment |
1 Answer
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CouchDb is a Nosql DB. You don't specify a schema to the records which would be created. The records are in the form of a Document. You can just relate a record in CouchDB as a JSON.
Would JSON ever get affected by adding/deleting a key?
No, it doesn't. It's just that the old records won't have that key which is being added to the new records. Therefore, you might not be able to retrieve old records only if you are filtering/querying the records with newly added key.
Hope this helps.
edited Nov 23 '18 at 2:47
cricket_007
81.3k1142111
answered Nov 22 '18 at 3:32
Nitish BhardwajNitish Bhardwaj
394213
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
CouchDb is a Nosql DB. You don't specify a schema to the records which would be created. The records are in the form of a Document. You can just relate a record in CouchDB as a JSON.
Would JSON ever get affected by adding/deleting a key?
No, it doesn't. It's just that the old records won't have that key which is being added to the new records. Therefore, you might not be able to retrieve old records only if you are filtering/querying the records with newly added key.
Hope this helps.
edited Nov 23 '18 at 2:47
cricket_007
81.3k1142111
answered Nov 22 '18 at 3:32
Nitish BhardwajNitish Bhardwaj
394213
add a comment |
CouchDb is a Nosql DB. You don't specify a schema to the records which would be created. The records are in the form of a Document. You can just relate a record in CouchDB as a JSON.
Would JSON ever get affected by adding/deleting a key?
No, it doesn't. It's just that the old records won't have that key which is being added to the new records. Therefore, you might not be able to retrieve old records only if you are filtering/querying the records with newly added key.
Hope this helps.
edited Nov 23 '18 at 2:47
cricket_007
81.3k1142111
answered Nov 22 '18 at 3:32
Nitish BhardwajNitish Bhardwaj
394213
add a comment |
CouchDb is a Nosql DB. You don't specify a schema to the records which would be created. The records are in the form of a Document. You can just relate a record in CouchDB as a JSON.
Would JSON ever get affected by adding/deleting a key?
No, it doesn't. It's just that the old records won't have that key which is being added to the new records. Therefore, you might not be able to retrieve old records only if you are filtering/querying the records with newly added key.
Hope this helps.
edited Nov 23 '18 at 2:47
cricket_007
81.3k1142111
answered Nov 22 '18 at 3:32
Nitish BhardwajNitish Bhardwaj
394213
CouchDb is a Nosql DB. You don't specify a schema to the records which would be created. The records are in the form of a Document. You can just relate a record in CouchDB as a JSON.
Would JSON ever get affected by adding/deleting a key?
No, it doesn't. It's just that the old records won't have that key which is being added to the new records. Therefore, you might not be able to retrieve old records only if you are filtering/querying the records with newly added key.
Hope this helps.
edited Nov 23 '18 at 2:47
cricket_007
81.3k1142111
answered Nov 22 '18 at 3:32
Nitish BhardwajNitish Bhardwaj
394213
edited Nov 23 '18 at 2:47
cricket_007
81.3k1142111
edited Nov 23 '18 at 2:47
cricket_007
81.3k1142111
edited Nov 23 '18 at 2:47
cricket_007
81.3k1142111
81.3k1142111
answered Nov 22 '18 at 3:32
Nitish BhardwajNitish Bhardwaj
394213
answered Nov 22 '18 at 3:32
Nitish BhardwajNitish Bhardwaj
394213
answered Nov 22 '18 at 3:32
Nitish BhardwajNitish Bhardwaj
394213
394213
add a comment |
add a comment |
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