Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the Role of a database administrator
a. Defining the Schema
The DBA describes the schema which consists of the structure of the data in the application.
The DBA defines what data needs to be present in the system ad how this data has to be denoted and organized.
b. Liaising with Users
The DBA wants to interact continuously with the users to understand the data in the system and its employ.
c. Defining Security & Integrity Checks
The DBA finds out about the access restrictions to be defined and demonstrates security checks accordingly. Data Integrity checks are as well defined by the DBA.
d. Defining Backup / Recovery Procedures
The DBA as well defines processes for backup and recovery. Defining backup procedures involves specifying what data is to backed up, the periodicity of taking backups and as well the medium and storage place for the backup data.
E. Monitoring Performance
The DBA has to incessantly check the performance of the queries and take measures to optimize all the queries in the application.
What are the benefits of prepared statements and place holders? Parameter binding operations automatically handle escaping of characters Encourage Statement reuse
Briefly explain each of the following database terms. Use no more than 2-3 lines for each term. 1. DBMS 2. Update Anomaly 3. Alias (referring to tables in SQL queries)
Explain the concept of Modeling With Objects A model is a conceptual representation of a specification, design or system from a particular point of view. A modelling language
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
1. Create a subroutine that does the remote blast on the file protein.fa. 2. Pass that returned files from the blast to another subroutine that parses the output and sends it to
Describe the term- State Diagram State Diagram: An object could receive a sequence of the input instructions. The state of the object can differ depending upon sequence of in
How is concurrency identified? Concurrency in objects can be identified by the way they alter their state. Current objects can change their state independently. Aggregation imp
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
Describe queries with complex types? The present extension of the SQL query language deal with the complex type Let us start with the simple example: Find the title and t
1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd