Query Processing and Execution in Sybase ASE | SAP ASE Tutorial

Query Processing and Execution | SAP ASE Tutorial
Client and Server Relationship
Identify the flow of information from the client to the server
Define the query scheduling process
Define the optimization process
Identify the flow of information from the client to the server
Query Scheduling Process
Optimization Process
Client and Server Architecture: It uses the network to separate the client and the server. The user interface runs on the client and data is stored & managed by server. The client contains application logic and presentation logic; the server contains the transaction and data processing logic.
Client Connections: The client application requests a connection to a server. Client application connects to the server across the network using a database access method. The SAP ASE network handler task wakes when contacted and performs username and password authentication. The server allocates a unused user connection and creates a user task. The server assigns a kernel process ID (kpid) and a server process ID (spid) for the user task and places it on the sleep queue. A signal is sent back to the client to indicate a successful connection.
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