We want to store a nested object in Redis For example a car

We want to store a nested object in Redis. For example , a car has an interior color that is beige and an exterior color that is blue. How would you store using hashing in Redis using HMSET. [Document Database] Mongo DB is schemaless. What is one advantage and one disadvantage of this choice? What is the use of a \"journal\" in Mongo DB? What are the advantages and disadvantages of using one, majority quorum, or all with respect to read/write consistency? If you have three columns in a column-oriented databases with columns: Date, Customer FirstName, Customer LastName, Gender. If you store each column in a column-table, what type of compression (run length encoding, dictionary encoding) will you use for each column. Assume you store the columns above in three tables: Date, Name (First Name, LastName), and, Gender. Show a join index that can be used to take the data from these three column tables t0 reconstruct for the following data:

Solution

a)
MongoDB is schemaless since it stores in terms of JSON type.
So advantage is dynamic based storing, increasing performance and document model.
Disadvantages are no transactions and no joins.

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b)
journaling helps to maintain storage later into two internal views of dataset, private, shated views.

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c)
MongoDB stores data in terms of JSON, so it stores and retrieves data fast. But when retreive data which
involves complex operations takes more time.