Resource Constraint:
Basically our educational institutions depend upon Government grants for their expenditure. Some institutions have no specific policy to earmark the budget allocation to library. Allocation to library depends upon the fund position of the particular institutions or as per the decision of the Head of the Institution. It is found that in such cases the library get last priority. Our libraries also do not have any another source to collects funds. The idea of Information for sale is not accepted our society. Paying for information is already part of culture in Western Countries but we are far away from it. Owing to resource constraint our stack and collection development suffers greatly.
(c) Users ever expanding need for information:
As narrated before there is information explosion. Need of readers/users have also expanded on a large scale. For a single piece of information the user have a wade through a flood of literature to fulfill his needs. The modern and interdisciplinary type of studies needs different types of information from a variety of subject and topics.
(d) Inflation, budgetary cuts resulting in reduction of buying power:
Inflation and budgetary cuts have adversely affected the buying power. High rise in the price of foreign books and subscription of the foreign journals has become a critical problem for our libraries.
Therefore we should think of resource sharing in libraries in a region/university and we can say that in future no library can exist without co-operation of other institution. As people co-operate so do libraries and information centers. This may be because they are in same geographic region, or that they share common subject interest or because they serve an overlapping complex of user population. Several advantages accrue from this activity.
1. Co-operation can reduce cost.
2. Duplication of efforts and material can avoid.
3. The stronger can help the weaker.
4. Participants can allocate specialized activities to each other and so concentrate their efforts for the good of the whole.
PLAN OF THE ACTION
Basically we have to identify interested institutions and their needs. We should a survey of the available basic resources of the interested and identified institutions. This group of Libraries must frame policies regarding acquisition, access to document, circulation to the document, protocols limitation, renewal procedure, procedure to recall the material, priorities, standardization etc. and in initial stage they may start a following steps.
(i) INTER LIBRARY LOAN 
This inter library loan service fir the documents except reference tools should be accepted as an official and compulsory activity by all members.
(ii) UNION CATALOGUE
Union catalogue of all member Libraries should be prepared. In the initial stage documents costing more than RS.500 may be included in this catalogue, and textbooks and general books may be deleted since they are bound to be purchased in all libraries. We may keep such catalog

INTRODUCTION:
There was a time when library was nothing but a store room where the reading materials were kept under lock and key and the person, who was called Librarian, was supposed to be a care taker and custodian. Mostly these libraries were owned by the kings, Royal families, and a few scholars. And they were the users of the libraries. However as time changed the concept of the library also has changed. The importance of library has come to the recognized everywhere. Library maintenance, upkeep and running were accorded the status of science and now it has become Library and information science. The necessity of Libraries was realized by one and all.
The present age aptly described as information age characterized by information explosion. The universe of recorded information and the number of the knowledgeable persons have increased tremendously. A new piece of research keeps coming up every second. The technologies known as current technologies today are going to be outdated within a very short time. In such changing situation the concept of Libraries also has to change radically. Acquiring all published material is impossible for any one library.
Resource constraint is an important limiting factor in collection development. On the other hand inflation, budgetary cuts resulting in reduction of buying power has became a critical and a important problem for libraries. Therefore a co-operative system of libraries to share resources as an alternative to the present system has to be thought about and fortunately new technological developments have distinctly rendered this possible and we would do well to take advantage of this. However before planning for such resource sharing we should try to understand barriers and solution of at least very important issues.
WHY RESOURCE SHARING?
(a) Non uniform Distribution and underutilization of fund:
Unfortunately in our country uniform policy if fund distribution is lacking. In every state different norms are observed. It is also need based distribution. The most important drawback is that the Govt. financial planning authorities discriminate between Govt. institutions and aided institutions even when they run the same course. Sometimes Government institutions are provided ample funds with the stipulation to spend the fund within a time limit and they returns the funds to the Governments. On other hand needy institutions with proper planning and machinery to utilize funds gets inadequate funds for their libraries. Steps must be taken to formulate and implement a uniform fund distribution policy. Of course this may take time but as an immediate step we can think of resource sharing to help our readers.

FUTURE TRENDS IN THE DATABASE MANAGEMENT SYSTEM
Database technology is changing rapidly. In many application special purpose database machine like IBM AS400 are being employed and this trend is likely to continue. Also the increasing concern of the user to have better tools for application development and graphics User interfaces will have significant impact on the changing database technology.
The system having interface with HLLS, worksheets, word processors etc. will be more demanded. It is also important for its revision facility, database integrity functions, extended retrieval facility. The newer generations of DBMS provide grater support for application system development with built in facilities for defining and handling data screens, menus and help menus. In spite of these modern trends in DBMS tools many organizations/ libraries/ information centers have not attempted to utilize these tools in system development and access by end users.
Now a day it becomes difficult to select the DBMS tools from the various DBMS available in the market. The information centers must acquire the better DBMS tools; however there is resistance for using the tools which are available in various organizations. It affects the services rendered to the users because of the lack of the training, poor technical support with no in house expert and unfamiliarity.
CONCLUSION
If the proper DBMS selected and the information centers or libraries are operated through them the libraries can save the time of users and also can serve more effectively to the users to update his/her knowledge. And in right way they can automate their libraries in real sense. Thus in future the DBMS can be friendly tool the hands of the librarians by which the library data management will become a joyful job instead of tedious job.
BIBLOGRAPHY
1. Iyengar, (T.K.S.), Frontier areas in information science, Sherbook Inc. New York, 1989.
2. Kashyap, (M.M.), Database system: design and development, Sterling publishers, New Delhi, 1993.
3. Singh, (M), Library and information Management : Theory and practice., IBT Publishers, New Delhi, 1988.
4. Ravichandra Rao (I.K.), Library automation., Wiley Eastern Ltd. New Delhi, 1982.
5. Everest, (G.C.), Database Management, Mc. Graw Hill, New York, 1986.
6. Korth, (H.F.), Siberschatz, (A), Database System concept, Mc. Graw Hill, New York,1993.

In the case of a library we shall be dealing with the following entity sets.
a) The library and its section - The set of all sections including departmental branches of a particular library. Each section name, location and assents.
b) Users-The set of people who have a membership in the library, each user may be described by attributes, Reader code No, Department, or status and address. 
c) Employee - The set of all people who work in the library, each employee may be described by the attribute, employee name and
d) Collection - The set of all documents maintained by the Library. Each document may be described by the attributes, documents No.1. Acc. No. Author, of the said document, total the key word. 
e) Transactions - The set of all users Transactions executed in the library. Each transaction may be described by the attributes, use code, Acc. No. Author, title, date of issue, and due date.
An important task in database modeling is to specify how entities and relationship are distinguished. Individual entities and relationship are distinct, but from database perspective. Their difference must be expressed in terms of their attributes. There is also one limitation of entity. Relationship model is that one cannot express relationship among relationship. One can view a relationship set and its associated entity set as a higher level entity which is treated in the same manner as any other entity.
RELATIONAL MODEL
The relational database model represents the database as a collection of tables. Although tables are simples, intensive motion, there is direct correspondence between the concept of relationship. The user of the database system may query these tables, inert delete the update the tables.
NETWORK MODEL
A network database consists of a collection of record which are connected with each other through links A link is an association between precisely two records. Records are organized in the form of an arbitrary graph.
HIERARCHICAL MODEL
A hierarchical database consists of a collection of records which are connect with each other through links. A record is similar to a record in the network model. Each record is a collection of fields, each of which contains only one data value. It can be single relationship or several relationships. The hierarchical model differs from the network model in that the records are organized as collection of trees rather than arbitrary graphs. 
DATABASE ADMINISTRATION
The database administration is fundamentally a people oriented junction. The main jo0b of the database administration is to coordinate and resolve conflicting needs and desires of users in their required application areas. Database 4 e administration exists within the information systems area of an organizations systems area of an organizations resolved the bias problem by creating information system as an independent staff function, however that still lacked credible authority. 
The most important thing in the data administration is the position of database administrator should not imposed on users. Users must see first the need for such a position, when the position is established user need to encounter positive and helpful attitude, and experience some beneficial results when interacting with the database administrator. In cooperation with users the database administrator seeks to determine what a data to collect and store and criteria used in validating input data and stored data.
The database administration is the key link in establishing and maintaining management and users confidence in the database. They have a mediator to receive both request and complaints. The unique functions of the database administrations are: 
1. Defining, creating, redefining and retiring data.
2. Making the database available to the using environment.
3. Informing and assisting users.
4. Maintaining database integrity.
5. Monitoring operations and performance.