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In this post, we will understand the difference between definition and declaration.DefinitionDefinition, with respect to a function indicates that the body of the function has been developed.With respect to variable, it means a value has been associated/defined with that variable.A function can be defined only once.Once a function or variable has been defined, it is ready to be used.A variable can be re-defined multiple times, as and when required. This depends on the language and the scopes.Memory is allocated when function or a variable is defined.Below is an example of variable definitionsum = 0A variable named ‘sum’ is assigned to ... Read More
In this post, we will understand the difference between linear data structure and non-linear data structure.Linear Data StructureThe elements of such a structure are arranged sequentially.Every element can be accessed by traversing through the linear structure.All the elements of a linear structure are at a single level, i.e there is no hierarchy.They are easy to implement and use.They utilize more memory, hence they are not very memory-friendly.The time complexity of linear data structure usually increases when the size of the structure increases.Examples include- list, array, stackThe below shows an example of a list in Python.my_list = [45, 42, 12, 34, ... Read More
Problem Statement − Use boto3 library in Python to retrieve the table definition of a database.Example − Retrieve the table definition of a database ‘QA-test’ and table as ‘security’ for version 2.Approach/Algorithm to solve this problemStep 1 − Import boto3 and botocore exceptions to handle exceptions.Step 2 − database_name, table_name and version_id is the mandatory parameter. It fetches definition of given table for a specified version.Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.Step 4 − Create ... Read More
Problem Statement − Use boto3 library in Python to retrieve the table definition of a database.Example − Retrieve the table definition of a database ‘QA-test’ and table as ‘security’.Approach/Algorithm to solve this problemStep 1 − Import boto3 and botocore exceptions to handle exceptions.Step 2 − database_name and table_name is the mandatory parameter. It fetches the definition of given table.Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.Step 4 − Create an AWS client for glue.Step 5 − ... Read More
Problem Statement − Use boto3 library in Python to get details of all security configuration present in AWS Glue Security.Example − Get the details of all security configuration present in AWS Glue Security.Approach/Algorithm to solve this problemStep 1 − Import boto3 and botocore exceptions to handle exceptions.Step 2 − There is no parameter. It fetches all security configuration present in user’s AWS Glue Security.Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.Step 4 − Create an AWS ... Read More
Problem Statement − Use boto3 library in Python to get details of a specified security configuration present in AWS Glue Security.Example − Get details of a specified security configuration (‘job-security-settings’) present in AWS Glue Security.Approach/Algorithm to solve this problemStep 1 − Import boto3 and botocore exceptions to handle exceptions.Step 2 − security_name is the mandatory parameter whose configuration details needs to be fetched.Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.Step 4 − Create an AWS client ... Read More
Problem Statement − Use boto3 library in Python to get definition of all glue jobs present in user’s AWS Glue Data catalog.Example − Get definition of all glue jobs present in AWS Glue Data catalog.Approach/Algorithm to solve this problemStep 1 − Import boto3 and botocore exceptions to handle exceptions.Step 2 − No parameter is required for this function. It will fetch definition of all listed jobs for user account.Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.Step ... Read More
Example − Retrieve the details of bookmarked job ‘book-job’ in AWS Glue Data Catalog.Problem Statement − Use boto3 library in Python to retrieve the details of a bookmarked job in AWS Glue Data Catalog.Approach/Algorithm to solve this problemStep 1 − Import boto3 and botocore exceptions to handle exceptions.Step 2 − bookmarked_job_name is the mandatory parameter. It should have job_name that is already bookmarked, otherwise it will throw EntityNotFoundException.Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.Step 4 ... Read More
Problem Statement − Use boto3 library in Python to retrieve the definition of all the databases.Example − Retrieve the definition of all the databases.Approach/Algorithm to solve this problemStep 1 − Import boto3 and botocore exceptions to handle exceptions.Step 2 − There is no parameter.Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.Step 4 − Create an AWS client for glue.Step 5 − Now use get_databases function.Step 6 − It returns the definition of all databases present in ... Read More
Problem Statement − Use boto3 library in Python to retrieve the security configuration/encryption settings of a catalog.Example − Retrieve the security configuration/encryption settings of a catalog.Approach/Algorithm to solve this problemStep 1 − Import boto3 and botocore exceptions to handle exceptions.Step 2 − catalog_id is the optional parameter. If it is not provided, it takes the detail of user’s AWS account.Step 3 − Create an AWS session using boto3 library. Make sure region_name is mentioned in default profile. If it is not mentioned, then explicitly pass the region_name while creating the session.Step 4 − Create an AWS client for glue.Step 5 ... Read More