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LevelDB vs. LevelDB

LevelDB LevelDB + Add column
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Description Key/Value database key/value database
Brand
Multi-user system No Yes
Memory minimum 0 B ?
License
Operating system
Programming language
Database ?
Website leveldb.​org www.​oracle.​com/​database/​b…b/​index.​html
Database model
Query language
Transactions No Yes
Unicode Yes Yes
Referential integrity No No
Price rating ★★★★★ ?
Sharding No No
Replication No Yes
Map and reduce No No
Revision control No ?
Atomicity Yes Yes
Consistency Yes Yes
Isolation No Yes
Durability (data storage) Yes Yes
Horizontal scalable No Yes
Software distribution ?
Full text search No Yes
Preference 48% votes 52% votes
Documentation level ★★☆☆☆ ★★★★☆
Lines of code 15.5 k 1 748 k
TTL for entries No No
Conditional entry updates Yes Yes
Composite keys Yes Yes
Free to use Yes Yes
Active Yes Yes
Database Connection Pooling No ?
Compression Yes Yes
Real time analytics No ?
Creation Date 2011 1994
Community Driven Good Good
Web interface No ?
Secondary Indexes No Yes
Graph support No No
Embeddable Yes Yes
Geospatial Indexes No No
Data storage
Native driver
Online backup No ?
Data types ?
Partial Index No ?
Function Based Index No ?
Log Yes Yes
Implementation flexibility (40% global votes) (0% global votes)
Download https:/​/​code.​google.​com/​p…wnloads/​list www.​oracle.​com/​technetwor…iteId=ocomen
Backup functionality No ?
Query Cache Yes ?
Ease of use ★★★★☆ ?
In-Place Update Yes ?
Free for commercial use Yes No
Sorts Yes Yes
Open Source Yes ?
Maximum size 1 000 000 000 EB ?
Perfomance ★★★★☆ ?
JSON Yes ?
Ajax Yes ?
Batch Loading Yes ?
Corruption Resistant No No
Free edition Yes ?
Does your mom understand it No ?
Integrity model ?
Value size max. ? 4 GB
Distributed Counter ? Yes
Replication mode ?
+ Add row ++
LevelDB LevelDB
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