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how can I find the maxinum of number not count from how many row and plus one&nbsp; in express mongodb app.post('/api/department',(request,response)=&gt;{&nbsp; &nbsp;&nbsp;database.collection("Department").count({},function(error,numOfDocs){&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;if(error){&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;console.log(error);&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;database.collection("Department").insertOne({&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DepartmentId : numOfDocs+1, 
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how can I find the maxinum of number not count from how many row and plus one  in express mongodb
app.post('/api/department',(request,response)=>{
    database.collection("Department").count({},function(error,numOfDocs){
        if(error){
            console.log(error);
        }
        database.collection("Department").insertOne({
                DepartmentId : numOfDocs+1,

Maximum value plus one mongodb express

MongoDB (from humongous) is a free and open-source cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with schemas. MongoDB is developed by MongoDB Inc. and is free and open-source, published under a combination of the GNU Affero General Public License and the Apache License.

MongoDB

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Databases are organized collections of data, most commonly accessed through management systems including schemas, tables, queries and processes that allow users to enter and manipulate the information or utilize it in other fashions, such as with web applications or for reporting purposes.

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A NoSQL database provides a mechanism for storage and retrieval of data which is modeled in means other than the tabular relations used in relational databases. Motivations for this approach include: simplicity of design, simpler "horizontal" scaling to clusters of machines and finer control over availability. The data structures used by NoSQL databases (e.g. key-value, wide column, graph, or document) are specified from those used by default in relational databases, making some operations faster in NoSQL. Sometimes the data structures used by NoSQL databases are also viewed as "more flexible" than relational database tables.